Chapter wise MCQs of Chemistry FSC part 2
Chemistry MCQs 2nd year
1. On
passing steam over red-hot coal we get __________.
(Water gas, Ethane, Carbonmonoxide)
2. ‘d’
and ‘f’ block elements are called __________.
(Heavy metals, Rare elements, Transition elements)
3. The
correct formula of pyrosulphuric acid is __________.
(H2SO4, H2S2O7, H3S2O5)
4. Aqua
regia is mixture of one part of __________ by volume and three parts of
__________.
(H2SO4, H3PO4, HNO3, HCl)
5. Heavy
hydrogen is also called __________.
(Proteum, Deuterium, Hydronium)
6. When
boric acid (H3BO3) is heated of 140°C, it forms __________.
(Boric Acid, Pyroboric acid, Metaboric acid)
7. Photographic
film is made of sheets of __________.
(Cellulose Acetate, P.V.A, Nylon)
8. C4H8
is a saturated hydrocarbon because it is __________.
(Cyclic, Open chain, Polymer)
9. n-Octane
is __________ at room temperature.
(Gas, Liquid, Semi-solid)
10. The
compound formed between an element A of group IIIA and an element B of group
VIA has the formula __________.
(AB, A2, B3, A2B3)
11. The
oxide formed by AI is __________.
(Acidic, Amphoteric, Basic)
12. Bakelite
is a polymer of __________ and form aldehyde.
(Ethane, Methanol, Phenol)
13. The
plastics, which can be heated only once, are known as __________ plastics.
(Perspex, Thermoplastic, Thermosetting)
14. The
deficiency of __________ in the human body is the cause of diabetes.
(Insulin, Alamin, Ptyalin)
15. If
the level of cholesterol increases in the blood serum, it causes __________.
(Diabetes,Heart attact, High blood pressure)
16. The
formula of baking soda is __________.
(NaHCO3, Na2CO3, Na2CO310H2O)
17. The
formula of Plaster of Paris is __________.
(CaSO4.2H2O, 2CaSO4.H2O, (CaSO4)2H2O)
18. The
atoms of the elements belonging to the same period of the Periodic table have
__________.
(Same number of protons, same number of neutrons, same
number of valence shells)
19. Sodium
thiosulphate is used in photography because of its __________.
(Reducing power, Complex formation, Oxidizing behaviour)
20. The
outer electronic configuration of copper is __________.
(4s14d10, 4s23d10, 4s13d10)
21. H2S
solution in water is __________.
(Neutral, Acidic, Basic)
22. __________
is isomer of ethanol.
(CH3OH, CH3OCH3, C6H5OH)
23. Petroleum
is a mixture of __________.
(Alkanes and alkenes, aromatic hydrocarbons, all of these)
24. Glucose
is __________.
(Reducing sugar, oxidizing sugar, none of these)
25. Pentane
shows __________.
(Two isomers, three isomers, four isomers)
Chapter 1
Periodic Classification of Elements
1. __________
elements have been discovered so far.
(100, 110, 120, 150)
2. so
far 110 elements have been discovered. Out of these __________ elements are
naturally occurring.
(100, 96, 92, 94)
3. __________
classified the then known elements into metals, non metals and their
derivatives.
(Dobreiner, Al-Razi, Newlands, Mendeleeve)
4. In
1817, a German chemist, __________ made use of the idea of relationship between
atomic weights and properties of elements for the classification of elements.
(Dobreiner, Al-Razi, Newlands, Mendeleeve)
5. __________
presented the law of triads.
(Dobreiner, Al-Razi, Newlands, Mendeleeve)
6. Dobreiner’s
work led to the law of triads which states that __________.
(Atomic weight of any one lement was found to be
approximately the mean of the other two elements of triad, Atomic weight of the
middle element was found to be approximately the mean of the other two elements
of a triad, Atomic number of any one element was found to be approximately the
mean of the other two elements of a triad, Atomic number of the middle element
was found to be approximately the mean of the other two elements of triad)
7. The
law of octaves was given by __________.
(Dobreiner, Al- Razi, Newlands, None of these)
8. Law
of octaves states that __________.
(The properties of every 6th element from the given one were
similar to the first, the properties of every 9th element from the given one
were similar to the first, the properties of every 8th element from the given
one were similar to the first, the properties of every 7th element from the
given one were similar to the second)
9. “Physical
and chemical properties of elements are periodic functions of their atomic
weight.” This is called __________.
(Dobereiner’s Law of Triads, Newlands’ Law of Octaves, Mendeleev’s
Periodic Law, None of these)
10. Lother
Meyer arranged the elements in order of their increasing atomic weights and
found that __________.
(Physical propertis of the elements were the periodic
function of their atomic weights, chemical properties of the elements were the
periodic function of their atomic number, physical properties of the elements
were the periodic function of their atomic number, chemical properties of the
elements were periodic function of their atomic weights)
11. Mendeleev’s
Periodic table was based on __________.
(Atomic number, Atomic mass, Atomic volume, Electronic
Configuration)
12. Mandeleev
formulated a rule for the classification of elements and concluded that
__________.
(Physical and chemical properties of the elements are
periodic functions of their atomic numbers, physical and chemical properties of
the elements are periodic functions of their atomic weights, physical
properties of the elements are periodic function of their atomic weights,
Chemical properties of the elements are periodic functions of their atomic
numbers)
13. Modern
Classification of elements is based on __________.
(Doberiner’s law of Triads, Newlands’ law of Octaves,
Mendeleev’s Periodic Table, None of these)
14. Excluding
H and He, the smallest element in the periodic table is __________.
(Lithium, Fluorine, Cesium, Iodine)
15. “Physical
and chemical properties of elements are the periodic functions of their atomic
numbers.” This is called __________.
(Law of Triads, Law of Octaves, Periodic Law, None of these)
16. Moseley’s
work led to the periodic law, which states that __________.
(the number of the electrons in the 1s energy
level increases as the atomic number increases, The properties of the elements
are a periodic function of their atomic masses, The x-rays spectra of the
elements are more complex than the optical spectra, The properties of elements
are the periodic function of their atomic number)
17. A
pair of elements in the same family in the periodic table classification is
__________.
(Chlorine and carbon, calcium and aluminium, nitrogen and
neon, sodium and potassium)
18. In
the period, the elements are arranged in strict sequence in order of
__________.
(Increasing charges in the nucleus, increasing atomic
weight, increasing number of electrons in valence shell, increasing valency)
19. Most
of the known elements are metals of __________ of periodic table.
(d-block, p-block, III-group, Zero block)
20. __________
reflects combining capacity of an element.
(Valency, atomic number, ionization energy, ionization
potential)
21. As
we move from left to right in second period of the periodic table, the gram
atomic volume of the elements __________.
(Increases at a constant rate, remains unchanged, decreases,
will change indefinitely)
22. The
volume in cubic centimeters occupied by one gram atom of the element is called
__________.
(Atomic Volume, Atomic weight, Mass number, None of these)
23. In a
__________, atomic volume increases with atomic number, from top to bottom, as
new shells are added up with increase in atomic number.
(Group, Period, Sub-group, None of these)
24. __________
of the following is a transition element.
(Ni, Rb, Al, As)
25. On
moving from left to right across a period in the periodic table, the size of
atom generally __________.
(decreases, increases, remains constant, decreases up to IV
A group and then increases)
26. The
amount of energy required to remove an electron from an atom of an element in
the gaseous state I called __________.
(Ionization Potential, Ionization energy, Electron volt,
both a and b)
27. Each
vertical row of the periodic table includes elements with chemical
characteristics that are in general __________.
(identical, similar, different, sometimes identical and
sometimes differents)
28. The
ionization energy __________ in a group from top to bottom with the increase in
atomic size.
(Increases, decreases, remains constant, none of these)
29. The
lowest ionization energies are found in the __________.
(inert gases, alkali metals, Transition elements, Halogens)
30. Ionization
energy is lowest for __________.
(Inert gases, alkali metals, halogens, alkaline earth
metals)
31. In
the periodic table, the highest ionization energies are for __________.
(Halogens, Noble gases, Alkali metals, Chalcogens)
32. The
atomic weight of an element divided by its density is called __________.
(Atomic mass, Atomic volume, Atomic density, Atomic number)
33. Elements
in the same family __________.
(have same atomic number, have the same molecular weight,
have similar chemical properties, constitute a group of elements with the same
electronic configuration)
34. In a
given period, the alkali metals have __________.
(smallest atomic size, lowest ionization energy, lowest
density, highest electron affinity)
35. Of
the following given elements __________ atom has the highest ionization energy.
(Be, F, N, Ne)
36. The
value of ionization energy __________ in a period from left to right due to the
decrease in atomic size.
(increases, decreases, remains constant, None of these)
37. __________
is the most electronegative element.
(Fluorine, Iodine, Oxygen, Sodium)
38. The
unit of ionization energy is __________.
(Joule, Calorie, electron volt, none of these)
39. Of
the following elements, __________ element has the highest first ionization
potential.
(Boron, carbon, nitrogen, oxygen)
40. The
unit of ionization potential is __________.
(Joule, joule per mole, calorie per mole, none of these)
41. In a
period, the ensity of normal elements first __________ and then __________
after reaching a maximum value somewhere in the middle.
(Increases, decreases, remains constant, none of these)
42. Most
of the known elements are __________.
(Rrystalloids, Metals, Metalloids, Non metals)
43. Melting
and boiling points gradually __________ in a periodic table from left to right
up to the middle.
(increases, decreases, remains constnt, none of these)
44. The
electropositive elements form __________.
(acidic oxides, basic oxides, neutral oxides, none of these)
45. __________
of the following elements has the lowest first ionization energy.
(Na, F, I, Cs)
46. The
electronegative elements form __________.
(Acidic oxides, Basic oxides, Neutral oxides, none of these)
47. __________
is the most volatile compound.
(HI, HCl, HBr, HF)
48. The
ionization energy of nitrogen is more than oxygen because of __________.
(more attraction of electrons by the nucleus, more
peneration effect, the extra stability of half filled p-orbitals, the size of
nitrogen atom is smaller)
49. The
elements of group IIA are called __________.
(Metals, Non-metals, Alkaline earth metals, Transition
elements)
50. __________
ion has the largest radius.
(Al+3, Cl-, F-, O-2)
51. __________
atom has the smallest size.
(C, F, Li, Rb)
52. __________
of the following has highest first ionization energy.
(Br, Cl, F, I)
53. The
most electropositive among the following elements is __________.
(Fe, Na, Cs, Pb)
Chapter 2
Hydrogen
1. Large
amounts of atomic hydrogen are present in the atmosphere of __________.
(Earth, Sun, Moon, none of these)
2. Hydrogen
atom contains __________ electrons.
(1, 2, 3, 4)
3. During
the electrolysis of water hydrogen is liberated at the __________.
(Anode, Cathode, Diode, none of these)
4. The
atomic weight of hydrogen is __________.
(1.00, 1.008, 1.08, 1.800)
5. In
nature hydrogen exists in __________.
(Gaseous state, Solid state, Liquid state, Plasma state)
6. __________
is the lightest gas.
(Nitrogen, Helium, Oxygen, Hydrogen)
7. Alkali
metals do not exist in __________.
(Monoatomic, Diatomic, Triatomic, none of these)
8. Hydrogen
generally combines with other elements to form __________.
(Ionic bond, Covalent bond, Polar bond, none of these)
9. Hydrogen
may be readily prepared by the action of water on __________.
(Fe, HCl, Zn, Na)
10. In
organic compounds, __________ element is found in close association with
hydrogen.
(C, N, O, none of these)
11. Ionic
hydrides are usually __________.
(liquids at room temperature, good reducing agents, good
electrical conductors in solid state, Easily reduced)
12. The
atoms of the same element, which have the same atomic number but different mass
numbers, are called __________.
(Isotopes, Actanides, Isobars, none of these)
13. The
difference in atomic weights or mass numbers of the atoms of the same element
is due to __________.
(Different number of electrons in them, different number of
protons in them, different number of neutrons in them, none of these)
14. A
tritium nucleus has __________.
(one proton and two electrons, one proton and two neutrons,
one neutrons and two protons, one proton and three neutrons)
15. Physical
properties of elements depend upon the number of __________.
(Protons in the nucleus, neutrons in the nucleus, electrons
in the valence shell, both protons and neutrons in the nucleus)
16. Chemical
properties of elements depend upon the number of __________.
(electrons in the valence shell, protons in the nucleus,
neutrons in the nucleus, protons and neutrons in the nucleus)
17. Chemical
properties of elements depend upon their __________.
(Atomic number, Atomic weight, volume, none of these)
18. The
hydronium ion is a/an __________.
(ion with formula H2O+, ion with the formula H3O+, free
radical rather than an ion, ion formed by removal of H- form a water molecules)
19. Hydrogen
is an important constituent of __________.
(Water, Petroleum, Natural gas, all of these)
20. When
steam is passed over red hot coke at 1000°C, a mixture of carbon monoxide and
hydrogen gas is produced. It is known as __________.
(Heavy water, Water gas, Phosgen gas, none of these)
21. The
most suitable process for the separation of CO from water gas is __________.
(Bosch Proces, Lane’s Process, Electrolysis of water, None
of these)
22. When
steam is passed over iron at 500°C, magnetic oxide and hydrogen gas is
produced. This is called __________.
(Bosch Process, Lane’s Process, Electrolysis, All of these)
23. The
presence of an acid or base renders water __________.
(good conductor of electricity, poor conductor of
electricity, very bad conductor of electricity, all of these)
24. The
process of loss of oxygen from a substance or addition of hydrogen is called
__________.
(Oxidation, Reduction, Hydrogenation, None of these)
25. Hydrogen
is a very good __________.
(Reducing agent, Oxidizing agent, Reducing agent as well as
oxidizing agent, none of these)
26. Lowering
of oxidation state of a metal is termed s __________.
(Oxidation, Reduction, Hydrogenation, All of these)
27. The
process of addition of hydrogen (H2) to a molecule is called __________.
(Oxidation, Reduction, Hydrogenation, all of these)
28. Formation
of vegetable ghee from vegetable oil is an example of __________.
(Oxidation, Reduction, Hydrogenation, all of these)
29. Ethylene
can be hydrogenated to __________ under pressure at about 300°C, when double
bond is changed to single compounds.
(Methane, Ethane, Ethyne, None of these)
30. Hydrogen
reacts with halogens to give __________.
(Hydrogen halides, hydrogen hydrides, hydrogen sulphides,
All of these)
31. Hydrogen
is used in the manufacture of __________.
(Fertilizers, CO2, O2, None of these)
32. Hydrogen
at the time of its generation during chemical reaction is in the form of atomic
state and is called __________.
(Ionic Hydrogen, Nascent hydrogen, atomic hydrogen, none of
these)
33. Hydrogen
molecule consists of two atoms linked together by a strong __________.
(Ionic bond, Covalent bond, Hydrogen bonding, None of these)
34. Nascent
hydrogen is used in the reduction of __________.
(Ionic compounds, Organic compounds, Inorganic compounds,
none of these)
35. The
compounds formed between two elements are called __________.
(Hydrides compounds, Binary compounds, Tertiary compounds,
None of these)
36. Hydrogen
reacts with some elements to form binary compounds called __________.
(Halides, Hydrides, Oxides, all of these)
37. The
hydrides formed by the transfer of electrons from electropositive metals to
hydrogen are called __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides)
38. NaH
is an example of __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides)
39. Ionic
hydrides ionize to produce __________.
(H-ion, OH-ion, H+ion, all of these)
40. The
hydrides, which are good conductors of electricity in the fused state, are
called __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides)
41. Covalent
hydrides generally exist in __________.
(Solid state, Liquid state, Gaseous state, all of these)
42. Covalent
hydrides are prepared by the direct action of __________.
(metals with hydrogen, non-metals with hydrogen, transition elements
with hydroge, none of these)
43. Hydrides,
which are non-stoichimetric in nature, are called __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides
44. The
law of chemical combination is not obeyed by __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides
45. Electron
deficient hydrides are called __________.
(Ionic hydrides, covalent hydrides, Complex hydrides,
Interstitial hydrides
46. Hydrogen
occurs in __________.
(One isotopic forms, two isotopic forms, three isotopic
forms, four isotopic forms)
47. Atomic
hydrogen is __________.
(More reactive than molecular hydrogen, less reactive than
molecular hydrogen, very less reactive than molecular hydrogen, all of these)
48. The
process of addition of hydrogen to a molecule is called __________.
(Halogenation, Hydrogention, Sulphonation, Reduction)
Chapter 3
S - Block Elements
1. Out
of all the elements of group IA, the highest atomic number is for __________.
(Na, Cs, Rb, K)
2. Out
of all the elements of group IA, the highest melting and boiling point is for
__________.
(Li, Na, Rb, K)
3. __________
of the following elements has highest ionization potential.
(K, Rb, Cs, Li)
4. Out
of all the elements of group IA, the highest heat of hydration is for
__________.
(Li, Na, K, Rb)
5. __________
of the elements has highest melting and boiling point.
(Be, Ca, Mg, Ba)
6. __________
of the following elements have highest oxidation potential.
(Na, Li, Rb, K)
7. Out
of all the elements of group IIA, the highest density at 20°C is for
__________.
8. Out
of all the following elements of group IIA, the highest atomic number is for
__________.
(Be, Ba, ca, Sr)
9. The
alkali metals possesses __________ electrons in their outermost orbitals.
(1, 2, 3, 4)
10. Out
of all the elements of group IIA, the highest heat of hydration is for
__________.
(Be, Ba, Ca, Mg)
11. __________
of the elements has highest ionic radius.
(Be, Ba, Sr, Ca)
12. Out
of all the elements of group IA, the highest heat of hydration is for
__________.
(Li, Na, K, Cs)
13. Of
all the group II elements, the highest oxidation potential is for __________.
(Li, Be, Ba, Ra)
14. Sodium
is not observed in +2 Oxidation State because of its __________.
(high first ionization potential, high second oxidation
potential, high ionic radius, high electronegativity)
15. The
metallic lustre of sodium is explained by the presence of __________.
(Na+ ions, conduction electrons, free protons, a body
centred cubic lattice)
16. __________
of the following substances is manufactured by electrolysis of NaCl solution.
(NaOH, Na2ClO3, NaClO3, Na)
17. When
NaCl is dissolved in water, the sodium ions become __________.
(Oxidized, Reduced, Hydrolyzed, Hydrated)
18. NaCl
imparts a golden yellow colour to the Bunsen flame. This can be interpreted due
to __________.
(Low ionization potential of sodium, Photosensitivity of
sodium, Sublimation of metallic sodium to give yellow colour, Emission of
excess energy absorbed as a radiation in the visible region)
19. The
alkaline earth metals possess __________ electron or electrons in their
outermost orbitals.
20. Alkali
metals form __________.
(Ionic bond, covalent bond, non-polar, Vander waal’s forces)
21. Sodium
salts constitute __________% of earth’s crust.
(2.40, 2.35, 2.30, 2.25)
22. Potassium
salts constitute __________% of the earth’s crust.
(2.40, 2.35, 2.30, 2.25)
23. Alkaline
earth metals occur in nature in __________.
(free state, combined state, both free and combined state,
none of these)
24. In
general alkali metals act as __________.
(Reducing agents, Oxidizing agents, Both reducing and
oxidizing agents, none of these)
25. All
alkaline metals except __________ are white in colour.
(Be, Mg, Ca, None of these)
26. In
the alkali metal series __________ of the following is most reactive.
(Li, Na, K, Rb)
27. In
the alkali metal series, Cesium is the most reactive metal because __________.
(its incomplete shell is nearest to nucleus, the valence
electron has a larger orbit than the orbit of the valence electron of any of
the others, it exerts considerable Beautiful force on the valence electrons, it
is a heavier metal)
28. Alkali
metals are __________.
(lighter than water, heavier than water, enlarged than water
, all of these)
29. __________
does not belong to alkali metals.
(Li, Na, Rb, K)
30. A
graphite anode is used in Down’s cell for the production of sodium because __________.
(It does not react with sodium, it does not react with
chorine, it is easy to fashion in circular form, it floats on the fused sodium
chloride)
31. __________
is a reducing agent and a constituent of a gun powder.
(KNO3, C, CaCO3, Na)
32. Alkaline
earth metals form __________ carbides on heating with carbon.
(Stable, Unstable, soluble, none of these)
33. Except
lithium, all alkali metal hydroxides are strongly __________.
(acidic in nature, basic in nature, neutral in nature, none
of these)
34. Alkaline
earth metal carbonates, sulphates and phosphates are __________.
(soluble in water, insoluble in water, sometimes soluble and
sometimes insoluble in water, none of these)
35. Alkali
metal carbonates, sulphates and phosphates are __________ in water with the
exception of Li2CO3 and Li3PO4.
(soluble, insoluble, Both soluble and insoluble, none of
these)
36. LiCl
is soluble in organic solvents while NaCl is not. This is because __________.
(Lattice energy of NaCl is less than LiCl, Li+ has higher
value of hydration energy than that of
Na+, LiCl is more covalent in nature than NaCl, Li+ has
lower value of hydration energy than Na+)
37. When
burnt in air, Lithium forms __________.
(Normal oxide, Peroxide, Super oxide, none of these)
38. The
chlorides of alkali metals and alkaline earth metals are generally __________.
(Ionic, Covalent, non polar, vander waal’s forces)
39. Sodium
is a __________.
(good conductor of electricity, poor conductor of
electricity, bad conductor of electricity, none of these)
40. Sodium
reacts vigorously with oxygen on heating to form __________.
(Sodium oxide, Sodium peroxide, sodium superoxide, all of
these)
41. Sodium
is very reactive with water. Hence due to its high reactivity with water, it is
stored in __________.
(Alcohol, Kerosine oil, Benzene, all of these)
42. Sodium
reacts vigorously with water, liberating __________.
(Oxygen, hydrogen, Carbonoxide, Neon)
43. Sodium
is a powerful __________.
(Reducing agent, oxidizing agent, bleaching agent, all of
these)
44. __________
is used s a reducing agent in the preparation of such metals as titanium and
zicronium from their chlorides or oxides.
(Mg, Na, Cu, Ag)
45. __________
is used in the synthesis of rubber.
(Mg, Cu, Na, Fe)
46. __________
reducing action is used in the manufacture of certain dyes and drugs.
(Na, Mg, Cu, Ca)
47. __________
is used often in highway lamps as filaments to produce yellow light.
(Na, Tungston, Mg, Fe)
48. Purification
of sodium chloride is accomplished by __________.
(Sublimation, Crystallization, Hydrogenation, Melting)
49. Ice
and sodium chloride form a freezing mixture, which is used in __________.
(Refregeration, Preserving fish, Sublimation, None of these)
50. Sodium
bicarbonate is commonly called __________.
(Soda Ash, Baking soda, Caustic soda, none of these)
51. Soap
is often composed of __________.
(sodium carbonate, calcium carbonate, rubidium carbonate,
sodium stearate)
52. Solvay’s
process is also called __________.
(Haber’s Proess, Ammonia Soda Process, Washing Soda Process,
Down’s Process)
53. __________
is a stronger base.
(NaOH, KOH, LiOH, HCl)
54. Na2CO3
is marketed as __________.
(Soda ash, baking soda, caustic soda, none of these)
55. When
a solution of sodium carbonate is evaporated, Na2CO3.10H2O crystallizes out t
room temperature and marketed as __________.
(Soda ash, baking soda, caustic soda, washing soda)
56. By
the action of aqueous NaOH on aluminium, __________ is produced.
(H2, CO2, H2O, O2)
57. __________
is used for weighing cotton cloth.
(Gypsum, Soda ash, Magnesium Sulphate, Washing soda)
Chapter 4
P - Block Elements
1.
__________ of the following is non-metal.
(Boron, Aluminium, Indium, Thallium)
2.
__________ of the following was isolated by Davy
in 1807 by electrolysis of moist boric acid.
(Boron, Indium, Aluminium, Gallium)
3.
__________ of the following is chemically inert.
(Boron, Indium, Aluminium, Gallium)
4.
__________ is not the member of group IIIA.
(B, In, C, Al)
5.
The oxides of Boron are __________ in nature.
(Acidic, Basic, Neutral, None of these)
6.
__________ forms the most acidic oxide.
(B, Al, Ga, In)
7.
Boron bursts into flame at __________.
(600°C, 700°C, 800°C, None of these)
8.
B3+ cannot exist in aqueous solution because of
its __________.
(Strong reducing ability, large size and small charge, small
size and large charge, strong oxidizing ability)
9.
Orthoboric acid on heating to about 100°C looses
a water molecule to form __________.
(Metaboric acid, Pyroboric Acid, Metaboric and Pyroboric
acid, none of these)
10. The
reduction of metal oxides is sometimes accomplished by using aluminium in the
__________.
(Goldshmidt’s reaction, Silberchmdit’s reaction, Baeyer’s
reaction, Zilch’s reaction)
11. Baeyer’s
Process is used for the purification of __________.
(Alum stone, Cryolite, Bauxite, none of these)
12. Hall’s
Process is based on electrolysis of __________.
(Alumina, Gypsum, Borax, none of these)
13. __________
is a better conductor of heat.
(Fe, Sn, Al, none of these)
14. Al2O3
formation involves evolution of a larger quantity of heat, which makes its use
in __________.
(Deoxidizer, confectionary, indoor photography, thermite
welding)
15. A
mixture of iron oxide and aluminium is called __________.
(Thermite, Bauxite, Alum, none of these)
16. Aluminium
is used in __________.
(X-ray welding, Spot welding, Thermite welding, none of
these)
17. __________
metal is used in photo-flash bulbs.
(Ca, Na, W, Al)
18. The
alloy of aluminium, which contains small quantities of manganese, copper and
magnesium, is called __________.
(duralumin, Magnalium, Alnico, none of these)
19. The
alloy of aluminium with small percentage of magnesium is called __________.
(Duralumin, Magnalium, Alnico, none of these)
20. The
aluminium which contains 20% nickel, 20% aluminium, 50% iron and 10% cobalt is
called __________.
(Duralumin, Magnalium, Alnico, none of these)
21. A
magnet made of __________ will lift approximately 4000 times of its own weight
of iron.
(Duralumin, Magnalium, Alnico, none of these)
22. An
alloy of aluminium made by alloying 5-15% aluminium and has a golden lustre is
called __________.
(duralumin, Magnalium, Aluminium Bronze, none of these)
23. All
the alums crystallize to yield __________.
(Octahedral crystal, Tetrahedral crystal, Trigonal crystal,
Linear crystal)
24. The
process of permanent dyeing is called __________.
(Mordanting, Painting, Calination, none of these)
25. The
solvent used in the extraction of aluminium from its ore is __________.
(Cryolite, Bauxite, Molten sodium chloride, Water)
26. The
group IV-A of the periodic table consists of __________ elements.
(three, four, five, six)
27. In
group IV-A the metallic character down the group __________.
(Increases, Decreases, remains constant, none of these)
28. __________
does not contain aluminium.
(Felsper, Cryolite, Kaoline, Anhydrite)
29. Carbon
differs from other members of its group due to the absence of __________
electrons.
(s, p, d, none of these)
30. Elements,
which exist in two or more physical or molecular forms, are called __________.
(Isotopes, Allotropes, Isobars, none of these)
31. Out
of the following elements of group IV A of the periodic table the higher
density is for the element __________.
(C, Si, Ge, Pb)
32. Diamond
is a __________ conductor of electricity and heat.
(Poor, Good, None, none of these)
33. Out
of all the elements of group IV the higher density is for __________.
(C, Si, Ge, Pb)
34. __________
is used as a lubricant for machinery and also as a moderator in nuclear
reactors.
(Diamond, Graphite, Epsom, Gypsum)
35. Highest
melting and boiling point is for __________.
(C, Ge, Si, Pb)
36. PbO
behaves as a/an __________.
(Amphoteric oxide, basic oxide, super oxide, sub oxide)
37. White
lead is prepared by __________.
(Dutch process, Solvay’s Process, Down’s Process, none of
these)
38. __________
member of the group V-A show several oxidation states such as –1, +2, +3, +4
and +5.
(P, As, Sb, N)
39. __________
member of the group V-A forms multiple bonds.
(P, Bi, As, N)
40. __________
member of group V-A does not show allotropy.
(P, Sb, N, As)
41. In
__________ solution glass is soluble.
(HNO3, HCl, HF, H2CO3)
42. On
industrial scale Nitric acid is prepared by __________.
(Dutch Process, Birkland-Eyde’s Process, Solvay’s Process,
Down’s Process)
43. In
Ostwald’s Process the substance used to oxide ammonia is __________.
(Zn, Pt, CO, none of these)
44. Copper
reacts with dilute nitric acid to form __________.
(Nitric oxide, nitrogen peroxide, nitrous oxide, none of
these)
45. Nitric
acid is a strong __________.
(reducing agent, bleaching agent, oxidizing agent, none of
these)
46. A
mixture consisting of one volume of concentrated HNO3 and three volumes of
concentrated HCl is called __________.
(Aqua regia, Meta stannic acid, Alum, Sandhur)
47. Lead
tertraethyle is used as __________.
(Fire extinguisher, Pain Killer, Mosquito repellent,
Petroleum Additive)
48. Nitric
acid is used in the manufacture of __________.
(Cellulose, Varnishes, T.N.T, all of these)
49. __________
allotropic form of coal is hard.
(Peat, Lignite, Anthracite, Graphite)
50. __________
molecule is paramagnetic nature.
(O, S, Se, Po)
51. __________
element edhibits the largest number of allotropic forms amongst the elements.
52. __________
element is the most abundant element in earth’s crust.
(Ca, Si, C, O)
53. There
are __________ rings in unit cell of Rhombic sulphur.
(12, 16, 20, 24)
54. Graphite
is used in nuclear reactor as __________.
(A Lurbicant, A fuel, for lining the inside of reactor as an
insulator, for reducing the velocity of neutrons)
55. In
its unit cell, monoclinic sulphur possesses how many S8 rings.
(12, 6, 3, 0)
56. H2S
is a good __________.
(reducing agent, oxidizing agent, bleaching agent, none of
these)
57. In
the aqueous solution H2S ionizes to produce __________ ions and behaves as a
weak acid.
(H+, H-, OH-, none of these)
58. H2S
reduces halogens to __________.
(hidrides, halides, halogens, none of these)
59. By
__________ process the H2SO4 produced is pure and can be produced of any
desired strength.
(Lead Chamber Process, Contact Process, Down’s Cell, none of
these)
60. __________
gas is responsible for rising of bread.
(CO, CO2, NH3, O2)
61. At
what temperature H2SO4 completely dissociates into sulphur trioxide and water.
(416°C, 516°C, 616°C, 716°C)
62. Concentrated
sulphuric acid acts as a __________.
(Reducing agent, Oxidizing agent, Dehydrating agent, None of
these)
63. __________
charcoal is used to decolourise brown sugar solution.
(Wood, Coconut, Animal, Sugar)
64. In
the sale of diamonds the unit of weight is carat. One cart is equal to
__________.
(100mg, 200mg, 300mg, 400mg)
65. Hot
concentrated sulphuric acid acts as an __________ usually itself reduced to
sulphur dioxide.
(Dehyrating, Oxidizing, Reducing, none of these)
66. __________
are the two elements that find wide application in transistor industry.
(Silicon and Germinium, Carbon and Platinium, Iridium and Germanium, Tungsten
and Platinium)
67. In
the manufactur of certain explosives such as nitroglycerine, trinitrotoluene
and guncotton etc. Sulphuric acid is used as a __________.
(Oxidizing agent, Reducing agent, Dehydrating agent, none of
these)
68. __________
prepared chlorine in 1774, by the action of hydrochloric acid on manganese
dioxide.
(Cavendish, C.W. Scheele, Sir Humphry Davy, Lane)
69. __________
suggested the name chlorine for the gas produced by the action of hydrochloric
acid on manganese dioxide.
(Sir Humphry Davy, C.W. Scheele, Cavendish, none of these)
70. Chlorine
is obtained by reacting concentrated HCl with __________ agent, such as MnO2,
KClO3, KMnO4.
(Reducing, oxidizing, dehydrating, none of these)
71. Electrolysis
of Brine produces __________.
(Chlorine, Hydrogen, H2S, Nitrogen)
72. The
process based on the oxidation of hydrochloric acid with oxygen is __________.
(Nelson’s Cell, Contact Process, Down’s Process, Deacon’s
Process)
73. __________
process is used for the production of chlorine gas.
(Deacon’s, Contact, Solvay’s, Electrolysis of water)
74. Chlorine
gas is __________ in colour.
(Yellow, Greenish Yellow, Violet, Blue)
75. __________
produces inflammation of the nose and throat when breathed in considerable
quantities.
(Nitrogen, Carbon dioxide, Chlorine, Hydrogen Sulphide)
76. To
kill bacterial, molst of the drinking water is treated with __________.
(Nitrogen, Carbon dioxide, Chlorine, Hydrogen Sulphide)
77. Chlorine
is used in the preparation of poisonous gases of warfare, such as __________.
(COCl2, H2S, HCl, none of these)
78. In
phosphorus oxide the number of oxygen atoms bonded to each phosphorus atom is
__________.
(1, 2, 3, 4)
79. Of
the following elements the only one which does not exhibit allotropy is
__________.
(P, As, Sb, Bi)
80. Phosgene
is the common name of __________.
(Carbon dioxide and Phosphine, Phosphoryle chloride,
Carbonyle Chloride, Carbon Tetrachloride)
81. Out
of all the elements of group VI A, the highest melting and boiling point is for
__________.
(Te, Se, S, Pb)
82. In
group VIA highest electronegativity is for __________.
(S, O, Pb, Se)
83. Large
deposits of sulphur in nature are found as __________.
(Sulphuric acid, hydrochloric acid, free sulphur, none of
these)
84. On
the basis of available data of the structure of monoclinic sulphur, it probably
consists of __________ chains.
(S6, S2, S4, S8)
85. Rhombic
sulphur consists of __________.
(S8 chains, S2 chains, S4 rings, S8 rings)
86. Pure
sulphuric acid is a solid compound which __________.
(Is always colloidal, slowly decomposes to form SO2, Seves
as a useful source for H2S, has never been observed)
87. The
form of sulphur, which is stable at room temperature and normal atmospheric
pressure, is __________.
(orthorhombic, hexagonal, mono clinic, amorphous)
88. When
H2S gas is dissolved in aqua regia, the function of HCl in the mixture is to
__________.
(oxidize the sulphur, oxidize the mercury, complex the
sulphur, complex the mercury)
89. When
liquid sulphur at one atmosphere pressure is very slowly cooled, unless super
cooling occurs, the first solid to appear is __________.
(monoclinic sulphur, Rhombic sulphur, Hexagonal sulphur,
metallic sulphur)
90. The
synthesis of ethers from alcohol depends on the fact that sulphuric acid is a
good __________.
(oxidizing agent, reducing agent, complexing agent,
dehydrating agent)
91. __________
of the following has the highest catenation capability.
(Oxygen, Sulphur, Selenium, Tellurium)
92. the
halogen with the highest ionization potential is __________.
(F, Cl, I, At)
93. The
halide ion with the highest hydration energy is __________.
(F-, Cl-, I-, At-)
94. Hydrofluoride
acid is __________.
(a powerful oxidizing agent, a weak acid, a strong acid, a
good reducing agent)
95. __________
of the following is most powerful oxidizing agent.
(F2, Cl2, Br2, I2)
96. __________
of the following exhibits the largest electrical conductivity in the liquid state.
(F2, Cl2, Br2, I2)
97. __________
of the following exhibits the highest bond energy.
(F2, Cl2, Br2, I2)
98. __________
does not form its oxy acids.
(F2, Cl2, Br2, I2)
99. The
colour of I2 solution can be discharged by shaking a aqueous solution of
__________.
(Sulphur dioxide, sodium thiosulphate, sodium sulphite,
sodium sulphate)
100. Bleaching
powder is obtained by the interaction of Cl2 and __________.
(a dilute solution of Ca(OH)2, conc. Solution of Ca(OH)2,
dry CaO, dry slaked lime)
Chapter 5
Transition Elements
1. Transition
elements are those in which __________ orbitals are in the process of
completion.
(d, f, s, d or f)
2. Transition
elements are located between __________ elements in the periodic table.
(s and p block, s and f block, d and p block, none of these)
3. Out
of total 110 elements known, there are more than __________ transition
elements.
(40, 50, 60, 70)
4. Elements
in which d-orbitals are in the process of completion are called __________
elements.
(outer transtion, inner transition, non-transition, none of
these)
5. __________
of the following is transition element.
(Sr, Sn, Cr, B)
6. __________
of the following elements is not included in the list of transition elements.
(Ca, Cu, Cr, CO)
7. Due
to the addition of electrons in inner f-robitals atomic and ionic radii or
f-block elements have a regular trend. This is called __________.
(Contraction, Lanthanide contraction, actanide, contraction,
none of these)
8. The
transition elements usually have very __________ melting and boiling points.
(low, high, intermediate, none of these)
9. Transition
elements show a tendency of __________.
(high reactivity, less reactivity, very high reactivity,
none of these)
10. Finely
divided iron is used in __________.
(Haber Process, Catalytic Hydrogenation, Oxidation of
ammonia to nitric oxide, Contact
Process)
11. __________
reagent can be used to identify Cu2+ ion.
(Nitric acid, Sulphuric acid, Sodium hydroxide, Potassium
chromate)
12. Vanadium
pentaoxide is used in __________.
(Haber Process, Oxidation of sulphur dioxide to sulphur
trioxide, oxidation of ammonia to nitric oxide, Contact Process)
13. __________
is the important ore of copper.
(Malachite, Bauxite, Blue Vitriol, Alumina)
14. Copper
is used in __________.
(Haber Process, Oxidation of ethyl alcohol to acetaldehyde,
oxidation of ammonia to nitric oxide, Contact Process)
15. Bessemer
converters are used to get __________.
(Aluminium, Copper, Steel, Sodium)
16. Titanium
is used as catalyst in __________.
(Haber Process, Catalytic Hydrogenation, Oxidation of
ammonia to nitric oxide,
Polymerization of ethyle into polyethylene)
17. Platinium
or Palladium is used as catalyst in __________.
(Haber Process, Catalytic Hydrogenation, Oxidation of
ammonia to nitric oxide, Contact Process)
18. __________
of the following does not belong to d-block elements.
(Chromium, Cobalt, Silicon, Copper)
19. Compounds
attracted into a magnetic field are called __________.
(Magnets, Paramagnets, Dimagnets, none of these)
20. Transition
metal compounds, which show paramagnetism, have __________.
(unpaired electrons, paird electrons, unpaired protons,
paired protons)
21. A
substance, which have even number of electrons and have paired spin is called
__________.
(Ferromagnetic, Paramagnetic, Dimagnetic, none of these)
22. Magnetic
movement is measured with help of __________.
(Guoy’s balance, Spring balance, Physical balance, Cavendish
Appratus)
23. __________
property provides information about the presence of unpaired electrons in an
atom or ion.
(Dipole moment, Magnetic moment, torque, none of these)
24. By
measuring the magnetic moment values we can measure __________.
(Nature of the transition metal compound, oxidation state of
the transition metal, both nature and oxidation state of transition metal
compound, none of these)
25. Transition
elements show variable valencies because of the involvement of the delectrons
in addition to __________.
(p-electrons, f-electrons, d-electrons, e-electrons)
26. The
empty spaces between atoms of transition metals in their crystal lattices are
called __________.
(Vacant spaces, valence spaces, interstices, none of these)
27. The
formation of non-stoichiometric compounds is due to the defects in solid
structure and __________.
(Variabel valency of transition elemennts, even number of
electrons, even number of protons, unpaired electrons)
28. Interstitial
compounds have __________ formula.
(definite, half, indefinite, no)
29. Strong
paramegnetism is called __________.
(dimagnetism, ferromagnetism, both dimagnetism and
ferromagnetism, none of these)
30. When
a number of molecules or negatively charged ions combine with a central d-block
atom or ion to form complex ion or molecule, __________ is formed.
(a co-ordinate compound, interstitial compound, di-atomic
compound, none of these)
31. In
coordinate bonding the molecules or ions, which bond onto the central metal ion
or atom, are called __________.
(actanides, Lanthanides, Ligands, none of these)
32. Ligands
are __________.
(electron pair donors, electron pair acceptros, neutral,
none of these)
33. [Ni(CN)4]2-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
34. [Cu(NH3)4]2+
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
35. MnO4-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
36. CrO42-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
37. [Cu(CN)4]3-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
38. [Zn(NH3)4]3-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
39. [Fe(CN)6]3-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
40. [Fe(CN)6]4-
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
41. [Ni(NH3)6]2+
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
42. [Co(NH3)6]3+
is an example of __________.
(Squre planar, tetrahedral complexes, octahedral complexes,
none of these)
43. In
the system of naming complex coordinate compounds cations are named __________
anions.
(after, beforem, inbetween, none of these)
44. The
names of __________ are usually unchanged.
(anionic ligands, cationic ligands, neutral ligands, none of
these)
45. NH3
is an example of __________ ligand.
(anionic, cationic, neutral, none of these)
46. H2O
is an example of __________ ligand.
(anionic, cationic, neutral, none of these)
47. The
suffix “ate” at the end of the name of the coordinate complex ion represents
a/an __________.
(cation, anion, cathode, anode)
48. A
mixture of iron sulphide and copper sulphide is called __________.
(gangue, matte, matter, residue)
49. Sulphide
ore is concentrated by __________.
(Froth floatation Process, Dutch Process, Bessemerization,
none of these)
50. __________
does not copper.
(Carborundum, Azurite, Blue Vitriol, Malachite)
51. Utensils
used to carry out fermentation are made of __________.
(Cu, Fe, Al, Ca)
52. An
alloy of copper, which contains 80% copper and 20% zinc, is called __________.
(Brass, Bronze, Bell metal, none of these)
53. Copper
sulphate reacts with solution of potassium iodide giving __________.
(sulphur dioxide, iodine, copper oxide, potassium oxide)
54. An
alloy of copper, which contains 90% Cu and 10% Sn is called __________.
(Bronze, Brass, Bell Metal, all of these)
55. An
alloy of copper, which contains 80% Cu and 20% Sn is called __________.
(Bronze, Brass, Bell metal, all of these)
56. The
substance attracted by magnetic field is known as __________.
(diamagnetic, paramagnetic, antimagnetic, all of these)
57. Copper
sulphate is commonly called __________.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
58. Silver
nitrate is commonly called __________.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
59. Stainless
steel is __________.
(a mixture, a compound, an element, all of these)
60. Potassium
dichromate is commonly called __________.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
61. Manganese
differs from most other transition elements because it reacts with __________.
(oxygen, water, sulphur, iodine)
62. __________
of the following elements can be included in the category of transition
elements.
(Cu, Al, Ar, At)
63. Potassium
ferrocyanide is a __________.
(normal salt, mixed salt, double salt, complex salt)
64. __________
of the following combination is included in the Iron triad of elements.
(Pd and Pt, Mn and Hg, Co and Ni, V and Ti)
65. __________
is a blue crystalline solid which is freely soluble in water.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
66. __________
is an orange crystalline solid which is freely soluble in water.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
67. __________
is a yellow crystalline solid which is freely soluble in water.
(Nila Thotha, K2CrO4, Surkh Kahi, none of these)
68. __________
is a colourless crystalline solid.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
69. __________
is used as fungicide and germicide.
(Nila Thotha, Lunar Caustic, Surkh Kahi, none of these)
70. Ferric
oxide is __________.
(a basic anhydride, an acid anhydride, an amphoteric
anhydride, green in colour)
71. Potassium
dichromate is a strong __________.
(reducing agent, oxidizing agent, dehydrating agent, all of
these)
72. The
densest element is __________.
(Pb, Hg, Pt, Os)
73. The
most strongly ferromagnetic element is __________.
(Fe, Co, Ni, Os)
74. Alloying
of metals serves to inhibit __________.
(Corrosion, Froth Floatation, Erossion, None of these)
75. Mechanical
strains can be removed by __________.
(heat treatment, polishing the metal surface, both heat
treatment and polishing the metals surface, none of these)
76. __________
has the lowest density.
(Cu, Ni, Sc, Zn)
77. Galvanizing
is done by dipping clean iron sheet in a zinc chloride bath and __________.
(heating, rusting, froth floatation, alloying)
78. There
are two well known theories to explain the phenomenon of corrosion namely
__________.
(Acid theory, Electromechanical theory, electrochemical
theory, acid and electromechanical theory)
79. __________
one of the following metals exists in liquid form.
(Sc, Y, La, Hg)
80. The
process of depositing a thin layer of tin on base metals to protect them from
corrosion is called __________.
(Exposure, tin plating, Fixing, none of these)
81. The
most strongly ferromagnetic element is __________.
(Fe, Ni, S, C)
82. The
property of a substance which permits it being drawn into wire is called
__________.
(softness, Ductility, Brittleness, Hardness)
83. One
of the constituent of German silver is __________.
(Ag, Cu, Mg, Al)
84. When
potassium permanganate is added to a saturated aqueous solution of potassium
hydroxide, __________ gas is evolved.
(Hydrogen, Oxygen, Carbon dioxide, none of these)
85. __________
reagent can be used to identify nickle ion.
(Resorcinol, Dimethyl glyoxime, Dimethyl Benzidine,
Potassium Ferrocyanide)
86. __________
of the following is the transition element.
(Sr, Sn, Cr, Fe)
87. Bessemer
converters are used to get __________.
(Aluminium, copper, steel, none of these)
88. __________
is not the ore of copper.
(Blue vitriol, Cuprite, Chalcocite, Steel)
89. __________
of the following elements is not included in the list of transition elements.
(Ca, Cu, Cr, Co)
90. __________
one of the following does not belong to d-block elements.
(Chromium, Silicon, Cobalt, Nickel)
Chapter 6
Organic Chemistry
1. The
branch of chemistry which deals with the study of compounds containing carbon
as a essential element is called __________.
(Organic chemistry, In organic chemistry, Physical
chemistry, all of these)
2. The
first organic compound synthesized in the laboratory is __________.
(Methane, Urea, Acetic Acid, Glucose)
3. __________
of the following is not an organic compound.
(CH4, CO2, CH2-CH2, CH3OH)
4. __________
of the following is not an organic compound.
(Penicillin, Urea, Oxalic acid, Plaster of Paris)
5. __________
is the important sources of naturally occurring compounds of carbon.
(Animals, Plants, Rock salts, Sea water)
6. __________
is not a component of coal.
(H, O2, N, Si)
7. Hard
black form of coal containing 92 – 98% carbon is called __________.
(Anthracite, Sub-bituminous coal, Bituminous coal, Lignite)
8. The
most abundant form of coal and is used as energy souce and carbonization for
coke, coal tar and coke-oven is called __________.
(Anthracite, sub-bituminous coal, Bituminous coal, Lignite)
9. Form
of coal used at power generating stations is called __________.
(Antracite, Sub-bituminous coal, Bituminous coal, Lignite)
10. A
soft and brown form of coal which contains 50 to 60% carbon is called
__________.
(Anthracite, Sub-bituminous coal, Bituminous coal, Lignite)
11. In
Pakistan deposits of lignite are found at __________.
(Dandot, Saindak, Khewra, none of these)
12. __________
is a pure carbon.
(Coke, Coal gas, Coal tar, none of these)
13. Its
major constituents are hydrogen (50%), methane (35%) and carbon monoxide (8%).
(Coke, coal gas, coal tar, none of these)
14. Number
of organic compounds present in coal tar is __________.
(115, 215, 315, 415)
15. Residue
left after fractional distillation of coal tar is called __________.
(Pitch, Dutch, Gangue, Matte)
16. Petroleum
in the unrefined form is called __________.
(Coke, Coal gas, Crude oil, Rock oil, both crude oil and
rock oil)
17. Natural
gas mainly consists of __________.
(Methane, Ethane, propane, Butanes)
18. In
Pakistan there are vast reserves of natural gas at __________ in Baluchistan.
(Bandot, Khewra, Saindak, Sui)
19. __________
is a mixture of methane, ethane, propane and butane, used as a fuel and for
making other organic chemicals.
(Refinary gas, Gasoline, Kerosene oil, gas oil)
20. __________
is a mixture of hydrocarbons containing 5-8 carbon atoms and boiling in the
range of 40-180°C.
(Refinary gas, Gasoline, Kerosene oil, gas oil)
21. __________
is a mixture of hydrocarbons having 11-12 carbon atoms and boiling point in the
range of 250°C.
(Refinary gas, Gasoline, Kerosene oil, gas oil)
22. A
mixture of hydrocarbons having 13-25 carbon atoms is called __________.
(Refinary gas, Gasoline, Kerosene oil, gas oil)
23. On
strong heating the fractions containing the larger hydrocarbon molecules are
broken up into smaller and more volatile molecules, this is called __________.
(Sublimation, Cracking, Roasting, Refining)
24. Cracking
is also termed as __________.
(Pyrolysis, Refining, Polymerization, Hydrohalogenation)
25. A
large number of organic compounds, especially the unsaturated ones, show a
great tendency to unite. This process is termed as __________.
(Pyrolysis, Cracking, Polymerization, none of these)
26. An
isomer of ethanol is __________.
(Dimethyl ether, Diethyl ether, Ethylene glycol, Methanol)
27. Organic
compounds made up of carbon and hydrogen are called __________.
(Polymers, Hydrocarbons, Butanes, none of these)
28. Organic
compounds other than the hydrocarbons may be considered to be derived from the
hydrocarbons by the replacement of one or more of their __________ atoms with
atoms or groups of atoms of other element.
(Carbon, Hydrogen, Nitrogen, none of these)
29. When
ethylene is heated under pressure, a transparent solid polymer, __________ is
obtained.
(Polyethene, Ethane, Methane, None of these)
30. An
atom or group of atoms, which confers characteristic properties to an organic
molecule, is called __________.
(Radical, Functional group, Polymer, none of these)
31. Compounds
having same molecular formula but different structures are said to be
__________.
(Polymers, Isomers, Radical, Functional group)
32. The
quality of petroleum is determined by __________.
(Decane number, octane number, hexane number, none of these)
33. __________
of the following obey isomerism.
(CO2, C2H6O, CuSO4, none of these)
34. Two
or more than two different compounds having the same molecular formula but
different carbon chains or skeletons are said to be __________.
(Chain isomers, position isomers, functional group isomers,
metamers)
35. The
kind of isomerism which depends upon the relative position of the group, or the
position of double or single bond in case of unsaturated compounds in termed as
__________.
(Chain isomerism, Position isomerism, Functional Group
isomerism, Metamerism)
36. Isomerism,
which involves compounds having the same molecular formula, but different
functional groups are called __________.
(Chain isomerism, Position isomerism, Functional Group
isomerism, Metamerism)
37. __________
is exhibited by compounds having the same functional group but different alkyl
attached to the same multivalent atom.
(Chain isomerism, Position isomerism, Functional Group
isomerism, Metamerism)
38. In
cracking usually catalyst used is __________.
(Pt, Aluminosilicate, Ni, Tetra-ethyl lead)
39. Iso-butane
exhibited __________.
(Chain Isomerism, Position Isomerism, Functional group
Isomerism, Metamerism)
40. In
CCl4 molecule the four valencies of carbon atom are directed towards the
corners of a __________.
(Cube, Hexagon, Prism, Tetrahedron)
41. Tetrahedral
nature of bonding in carbon atom was first shown by __________.
(Wohler, Vant Hoff and LeBel, Lewis, Kekule)
42. The
general formula (RCO)2O represents __________.
(An ether, ketone, an ester, an acid anhydride)
43. Formation
of alkane by the action of zinc on alkyl halide is called __________.
(Frankland reaction, Wurtz reaction, Cannizzaro’s reaction,
Kolbe’s reaction)
44. __________
of the following are isomers.
(Methyl alcohol and dimethyl ether, Ethyl alcohol and
dimethyl ether, Acetone and
Acetaldehyde, Proponoic acid and proponanone)
45. The
isomers must have the same __________.
(Structural formula, molecular formula, chemical properties,
physical properties)
46. __________
has the longest bond length.
(C = C, C º C, C – C, all of these)
47. In
alkanes all C – C bonds have __________.
(single bond, double bond, triple bond, none of these)
48. Removal
of one of the hydrogen atoms of an alkane produces a __________.
(alkyl group, ethyl group, methyl group, none of these)
49. Compounds
in which two alkyl groups are attached to an oxygen atom are called __________.
(alkanes, ethers, alcohals, isomers0
50. Many
hydrocarbons contain more than one OH groups in a molecule. Molecules of this
type are called __________.
(Ethers, Polyhydroxy alcohols, aldehydes, none of these)
51. __________
is the common name of methanol.
(formaldehyde, acetaldehyde, propionaldehyde, none of these)
52. Compounds
which contain carbonyl group but differ from aldehydes in that two alkyl groups
are attached to the carbon of carbonyl group are called __________.
(Ethers, Ketons, Alcohols, none of these)
53. __________
is the common name of propanone.
(Acetone , ketone, Diethyl Ketone, none of these)
54. Benzene
is a __________.
(Heterocyclic compound, Alicyclic compound, Aromatic
compound, Acyclic)
55. Common
name of formic acid is __________.
(Methanoic acid, Ethanoic acid, Propanoic acid, none of
these)
56. The
properties of organic compounds are due to __________.
(Covalent bonds, Functional groups, Ionic bonds, None of
these)
Chapter 7
Hydrocarbons
1. Organic
compounds, which contain element carbon and hydrogen only are called
__________.
(Hyrocarbons, Ethers, Ketones, none of these)
2. The
number of hydrocarbons is very large because of the property of hydrogen to
__________, with it self in the form of chains and rings.
(Cmbine, Catenate, Sulphonation, none o these)
3. Carbon
usually exhibits a covalency of __________.
(Two in most of its compounds, three in most of its
compounds, four in most of its compounds, none of these)
4. Hydrocarbons,
which contain single bonds, are called __________.
(alkanes, alkenes, alkynes, none of these)
5. Hydrocarbons,
which contain double bonds, are called __________.
(alkanes, alkenes, alkynes, none of these)
6. Hydrocarbons,
which contain triple bonds, are called __________.
(alkanes, alkenes, alkynes, none of these)
7. The
alkanes have __________.
(tetrahedral frame work, planar molecules, linear structure,
none of these)
8. The
alkynes have __________.
(tetrahedral frame work, planar molecules, linear structure,
none of these)
9. The
alkenes have __________.
(tetrahedral frame work, planar molecules, linear structure,
none of these)
10. Saturated
Hydrocarbons are also called __________.
(Alkanes, Olefins, Alkenes, Alkanes and Olefins)
11. Unsaturated
hydrocarbons are also called __________.
(Alkenes, Paraffins, alkanes, none of these)
12. Alkenes
are characterized by the presence of __________ bond between two carbon atoms.
(single, double, triple, none of these)
13. Alkanes
or paraffins are characterized by the presence of __________ bond between two
carbon atoms.
(Single, double, triple, none of these)
14. Alkynes
are characterized by the presence of __________ bond between two carbon atoms.
(single, double, triple, none of these)
15. Alkanes
are also called __________.
(Paraffins, Olefins, Aldehydes, none of these)
16. Alkenes
are also called __________.
(Paraffins, Olefins, Carbonyl, none of these)
17. An
alkane hydrocarbon chain on cyclization would result in the formation of
__________.
(Alicyclic compound, aromatic compound, ethers, none of
these)
18. Benzene
is the simplest example of hydrocarbon called __________.
(Alicyclic, aromatic, open chain, none of these)
19. Solid
CH4 is __________.
(molecular solid, covalent solid, ionic solid, does not
exist)
20. Methane
is also known as __________.
(oil gas, marsh gas, gasoline, none of these)
21. A
liquid hydrocarbon is converted into a mixture of gaseous hydrocarbon by
__________.
(Cracking, Hydrolysis, Oxidation, Reduction)
22. __________
is obtained in the laboratory by heating a mixture of sodium acetate and soda
lime.
(Alcohol, Ethene, Methane, none of these)
23. Alkenes
undergo __________.
(addition reaction, substitution reaction, both addition and
substitution reaction)
24. __________
does not react with aqueous solution of acids, alkalies, or potassium
permanganate or other oxidizing agents and most of the usual laboratory
reagents.
(Benzene, Ether, Methane, Acetic acid)
25. Bromine
reacts with methane when the reaction is catalyzed by __________.
(Sunlight, high frequency radiation, diffused sunlight,
nickel)
26. In
methane the replacement of hydrogen by _ NO2 is called __________.
(Pyrolysis, Nitration, Halogenation, none of these)
27. Methane
when heated to extreme temperature in the absence of air undergoes thermal
decomposition, called __________.
(Nitration, Catalytic oxidation, Pyrolysis, none of these)
28. Urea,
a useful fertilizer, is prepared on industrial scale from __________.
(Natural gas, Coal, Coke, Petroleum)
29. Carbon
black is a raw material for paints and automobile tyres and is prepared from
__________.
(Ethane, Ethene, Methane, none of these)
30. C2H6
is called __________.
(Methane, Ethane, Methanol, none of these)
31. __________
is obtained in the laboratory by heating sodium proponoate and soda lime.
(Methane, Ethane, Ethene, none of these)
32. In
the laboratory ethane is prepared by the reaction called __________.
(Sabatier-Senderens Reaction, Pyrolysis, Catenation,
Hydrohalogenation)
33. When
an aqueous solution of sodium or potassium salt of mono-carboxylic acid is
subjected to electrolytic, corresponding alkane is formed. This reaction is
called __________.
(Sabatier-Senderens Reaction, Kolbe’s Electrolysis,
Polymerization, chlorination)
34. On
burning __________ produces a considerable amount of heat energy which may be
used for welding process.
(Ethane, Benzene, Ethene, none of these)
35. __________
is found to be present in wood gas and coal gas.
(Methane, Ethene, Ethane, Benzene)
36. __________
is prepared on a small scale in the laboratory by heating together ethyl
alcohol and sulphuric acid.
(Methane, Ethane, Ethylene, none of these)
37. The
elimination of hydrogen halide (HX) from adjacent carbon atoms is called
__________.
(Pyrolysis, Chlorination, Dehydrohalogenation, none of
these)
38. __________
process is important in the hardening of vegetable and animals oils to produce
solid fats which are used to make margarine.
(Pyrolysis, Catenation, Hydrogenation, Dehydrohalogenation)
39. When
a mixture of ethene and air is passed over heated silver under pressure, we get
__________.
(Epoxide, Superoxide, Suboxide, none of these)
40. The
negative part of the addendum adds on to the carbon atom joined to the least
number of hydrogen atoms. The statement is called __________.
(Markownikoff’s rule, Peroxide effect, Theile’s theory,
Baeyer’s strain theory)
41. Baeyer’s
test is the basis for detection of a __________ bond in an organic molecule.
(single, double, triple, none of these)
42. __________
was used in first world war.
(Phosgene gas, Mustard gas, Oil gas, Coal gas)
43. When
a mixture of CO, C2H4 and C2H2 is passed through ammonical cuprous chloride
solution then __________.
(Acetylene and CO are absorbed, CO is absorbed, C2H4 is
absorbed, Nothing happens)
44. Ethylene
dichloride is also called __________.
(Mustard gas, Dutch liquid, Polyethene, none of these)
45. __________
is used to manufacture mustard gas which is poisonous gas used as war gas.
(Ethane, Methane, Ethylene, none of these)
46. __________
is most found in alkenes.
(Chain isomerism, Geometrical isomerism, Mesomerism,
Position Isomerism)
47. __________
poisonous gas is present in the exhaust fumes of car.
(Methane, Acetylene, HCl, Carbon dioxide)
48. __________
is used to import colour to stile green citrus fruit form ripening.
(Ethylene, Methane, Ethane, none of these)
49. The
number of xylene isomers is __________.
(2, 3, 4, 5)
50. Ethylene
dichloride and ethylene chloride are isomeric compounds. The statement which is
not applicable to both of them is __________.
(react with alcoholic potash, react with aqueous potash and
give the same product, are dihalides, answer Beilstein’s test)
51. Structure
of benzene is __________.
(Diagonal, Planner, Pyramidal, Tetrahedral)
52. __________
is used in the manufacture of plastic and synthetic rubber.
(Styrene, Mustard gas, Polythene, none of these)
53. The
polythene is a polymer of __________.
(Ethylene, Aceton, Propylene, Butadiene)
54. Acetylene
or ethyne was discovered accidentally in 1899 by the American chemist __________.
(Wilsson, Lane, Nelson, none of these)
55. Acetylene
is present in small proportions (about 0.06% by volume) in __________.
(Natural gas, Coal gas, Gasoline, Petroleum)
56. __________
is prepared in the laboratory by dropping water on calcium carbide.
(Ethylene, Acetylene, Methane, none of these)
57. The
process used for the preparation of acetylene is __________.
(Berthelot Process, Sabatier-Senderns Reaction, Kolbe’s Process,
none of these)
58. Acetylene
has a characteristic ethereal smell resembling that of __________.
(Rotten egg, Garlic, Benzene, none of these)
59. Acetylene
burns with __________ flame.
(Greenish, Bluish, Smoky, none of these)
60. Benzene
was found by __________ in 1825 in the gas produced by the destructive
distillation of vegetable oils.
(Hofmann, Michael Faraday, Solvay, none of these)
61. __________
found benzene in coal-tar.
(Hofmann, Michael Faraday, Solvay, none of these)
62. When
n-hexane obtained from petroleum is heated in the presence of platinum at 500°C
under 10 – 20 atmosphere pressure, it cyclises to give __________.
(Ether, Benzene, Mustard Gas, none of these)
63. Phenol
is reduced to __________, when its vapours are passed over red hot zinc dust.
(Ether, Benzene, Ethane, Acetylene)
64. Replacement
of hydrogen atom by – SO2 OH is called __________.
(Nitration, Sulphonation, Alkylation, Hydrogenation)
65. _
SO2OH is called __________.
(Sulphonic Group, Carbonyl group, Methyl group, none of
these)
66. Under
the influence of anhydrous aluminium chloride as a catalyst, benzene reacts
with alkyl and acyl halides giving alkylated and acylated benzens. The reaction
is called __________.
(Friedel-Cracts Reactions, Berthelot’s Reaction,
Sabatier-Senderens Reaction, none of these)
Chapter 8
Alkyl Halides
1. Monohalo
derivatives of alkanes are called __________.
(Acyl halides, Aryl Halides, Alkyl Halides, none of these)
2. The
general formula of alkyl halides is __________.
(CnH2n+1 X, CnHn+1 X, C2nH2n+1 X, none of these)
3. When
an alkene is treated with halogen acids, __________ is formed.
(Alkyl halide, Acyl halide, Carbonyl chloride, all of these)
4. Formula
of Thionyl Chloride is __________.
(SOCl2, ZnCl2, CH3Cl, none of these)
5. If
ethane is treated with HBr then __________.
(Ethyl bromide is formed, Methyl bromide is formed, Bromine
is evolved, Hydrogen is obtained)
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6. When
metallic sodium in ether is heated with an alkyl halide, a higher alkane is
formed. It is called __________.
(Sulphonation, Wurtz’s Reaction, Friedel-Crafts Reaction,
none of these)
7. If
sodium lead alloy is treated with methyl chloride then __________.
(Tetra ethyl lead is formed, Tetra methyl lead is formed,
Tri methyl lead is formed, Di methyl lead is formed)
8. Dehydrohalogenation
of alkyl halide is carried in the presence of alcoholic __________.
(NaOH, KOH, Ca(OH)2, none of these)
9. Grignard’s
reagent when reacts with ammonia then __________.
(Methane is formed, Ethane is formed, Nitrogen is evolved,
Magnesium is separated)
10. Grignard’s
reagent reacts with alkyl halide to form __________.
(Alkanes, Alkynes, Alkenes, Alcohols)
11. Grignard’s
reagents are __________.
(Alkyl halide, Alkyl magnesium halide, Alkyl sodium halide,
none of these)
12. On
passing CO2 through Grignard reagent __________ is formed.
(Methanoic acid, Ethanoic acid, Propanoic acid, No reaction
occurs)
13. Alkyl
halides (methyl chloride or ethyl chloride) when treated with __________, react
to produce the important anti-knock gasoline additives.
(Sodium, Lead, Sodium-lead Alloy, none of these)
14. On
adding formaldehyde to Grignard’s reagent __________ is formed.
(Primary alcohol, Secondary alcohol, Aldehyde, Acetone)
15. Action
of zinc with alkyl halide in the presence of an inert solvent forms a
corresponding higher alkane. This is called __________.
(Wurtz’s Reaction, Frankland Reaction, Hoffman’s Reaction,
none of these)
16. The
hydrolysis of alkyl halides by heating with aqueous alkali is a __________
substitution reaction.
(Electrophilic, Nucleophilic, Electrophile and Nucleophile,
none of these)
17. __________
of the following compounds does not react with bromine.
(Ethylamine, Propene, Phenol, Chloroform)
18. A
reaction in which an atom or group of atoms replaces an atom or group of atoms
already present in the molecule of a substance is called __________.
(Nitration, Halogenation, Substitution, Sulphonation)
19. __________
is a Neucliphile.
(OH-, CN-, NH3, all of these)
20. General
formula of Grignard’s reagent is __________.
(R – Mg – X, R – Al – X, R – Na – X, R – Cl – X)
21. __________
is prepared by heating methyl iodide with fresh magnesium turnings in anhydrous
ether.
(Grignard’s reagent, Mustard gas, Benzene, none of these)
22. When
Grignard’s reagent is hydrolyzed with water, it is converted into __________.
(Alkynes, Alkenes, Alkanes, Acetons)
23. __________
of the following alkyl halides is used as a methylating agent.
(C2H5Cl, C2H5Br, C2H5I, CH3I)
24. Ethyl
chloride reacts with alcoholic KOH to give __________.
(C2H5OH, C2H6, C2H2, C2H4)
25. Dry
carbon dioxide is passed through Grignard’s Reagent in the presence of
__________ as a solvent.
(Acetone, Benzene, Ether, none of these)
26. Grignard’s
reagent reacts with CO2 to form __________.
(HCl, Carboxylic acid, Acetic acid, Carbonic acid)
27. Grignard’s
reagent reacts with acetaldehyde to form __________.
(Primary alcohol, Secondary alcohol, Tertiary alcohol, all
of these)
28. Alkyl
halides reacts with Zn to form __________.
(Alkynes, Alkanes, Alkenes, none of these)
Chapter 9
Organic Compounds
1.
The action of nitrous acid on ethyl amine gives
__________.
(Ethane, Ammonia, Ethyl alcohol, Nitroethane)
2.
Isopropyl alcohol on oxidation gives __________.
(Ether, Acetone, Ethylene, Acetaldehyde)
3.
Rectified spirit contains __________ % alcohol.
(95.6, 75.0, 100.0, 85.4)
4.
__________ is the end product in the process of
fermentation.
(Methyl alcohol, Ethanol, CH3OH, Ethylene)
5.
__________ is not the characteristic of the
alcohols.
(Their boiling points rise fairly uniformly with a rise in
molecular weight, Lower members have a pleasant smell but burning taste and the
higher ones are odourless and tasteless, these are lighter than water, Lower
members are soluble in water and organic solvents but solubility decreases with
increase in molecular weight)
6.
In the dehydration of ethyl alcohol to ethylene
with concentrated sulphuric acid __________.
(Carbonium ions are involved, carbonium are evolved,
sulphuric acid acts as an electrophile, none of these)
7.
A compound is an/a __________ if the “R-” group
is derived from aliphatic or alicyclic hydrocarbons.
(Ether, Ketone, Alcohol, Phenol)
8.
A compound which has –OH group attached to an
aromatic hydrocarbon is called __________.
(Alcohol, Phenol, Ether, none of these)
9.
A product formed by the reaction of sodium with
ethanol is __________.
(H2O, NaOH, NaH, H2)
10. An
alcohol, which contains on –OH group is called __________.
(Monohydric, Dihydric, Trihydric, none of these)
11. An
alcohol, which contains on –OH group is called __________.
(Monohydric, Dihydric, Trihydric, none of these)
12. Primary,
secondary and tertiary alcohols may be distinguished by using __________.
(Fehling’s solution, Victor Meyer test, Hofmann set,
Beilstein test)
13. The
number of structural isomers for C4H9OH is __________.
(3, 4, 5, 6)
14. In
cold countries glycerol is added to water in car radiators as it helps to
__________. (bring down the specific heat of water, lower the freezing point,
reduce the viscosity, make water a better lubricant)
15. Aldehydes
and Ketons are commonly referred to as __________.
(Ethers, Carbonyl compounds, phenols, none of these)
16. Aldehyde
may be distinguished from ketons by the use of __________.
(Concentrated Sulphyric acid, Grignard’s Reagent,
Pyrogallol, Fehlings solution)
17. In
aldehydes one bond of carbonyl group is always attached to __________.
(Carbon atom, Hydrogen atom, Nitrogen atom, none of these)
18. An
aldehyde on oxidation gives __________.
(an alcohol, a ketone, an acid, an amine)
19. Acid
anhydrides are calls of carboxylic acid derivatives, which may be formed by the
elimation of __________.
(Carbon, Hydrogen, Water, none of these)
20. Formaline
is an aqueous solution of __________.
(Formic acid, Formaldehyde, Flurescein, Furfuraldehyde)
21. Methyl
alcohol is known commercially as __________.
(Wood-spirit, Wood Naphtha, Mustard gas, both Wood spirit
and Wood- Naphtha)
22. __________
discovered Methyl alcohol.
(Boyle, Salvay, Jabber Bin Hayyan, none of these)
23. When
wood is heated with an insufficient supply of air, organic materials are driven
off as gases, and the cellulose is decomposed to almost pure carbon is called
__________.
(Coal, Charcoal, Oil gas, Natural gas)
24. Now
a days a large quantity of methyl alcohol is obtained by passing __________
over heated zinc and chromium oxides at 400 - 450°C under 200 atmospheric
pressure. (Natural gas, Water gas, Ethylene, none of these)
25. Methyl
alcohol can cause __________.
(Cancer, Blindness, Aneimia, none of these)
26. The
reaction of alcohol with thionyl chloride (SOCl2) in the presence of solvent
called __________.
(Pyridine yields, Adenine yields, Guanine yields, none of
these)
27. Ethyl
alcohol often called __________.
(Alcohol, Spirit, Ether, Lacquer)
28. Ethyl
alcohol is also called __________.
(Methyalted spirit, Spirit of wine, Wood spirit, none of
these)
29. __________
is also present in the urine of diabetic patients.
(Spirit of wine, Wood spirit, Methane, none of these)
30. In
1808, __________ discovered ethyl alcohol in urine of diabetic patients.
(Boyl, Suassure, Mendleeve, none of these)
31. Ethyl
alcohol is produced on commercial scale by the biological break down of
__________,
(Starch, Minerals, Cellulase, None of these)
32. The
14 enzymes present in the living cells of the yeast are collectively called
__________.
(Substrate, Zymase, Amylase, none of these)
33. The
force of attraction of the electrons of one atom for the protons of another
atom in close proximity is called __________.
(Ionic bond, Hydrogen bond, Covalent bond, all of these)
34. __________
of the following compounds can form a hydrogen bond.
(CH4, H2O, NaCl, CHCl3)
35. When
two ice cubes are pressed over each other, they unite to form one cube.
__________ of the following forces is responsible to hold
them together.
(Hydrogen bond formation, Vander Waal’s forces, Covalent
bond, Dopole Interaction)
36. CH3OH
and C2H5OH are highly miscible with water because they exhbits __________.
(Ionic bonding, Covalent bonding, Hydrogen bonding, none of
these)
37. Alcohols
may be converted to the corresponding __________ by actions of halogen acids in
the presence of ZnCl2.
(Aldehydes, Alkyl halides, acyl halides, none of these)
38. Compounds
obtained by the elimination of a molecule of water between an alcohol and
hydroxyl group of the acid are called __________.
(Ethers, Esters, Ketons, Phenols)
39. During
the dehydration of alcohols, relatively high temperature and moderate alcohol
concentration yield the corresponding __________.
(Ether, Olefin, Paraffin, none of these)
40. Ethyl
alcohol may be identified by the __________.
(Bayer’s Test, Flame Test, Idoform Test, Chloroform Test)
41. Industrially,
formaldehyde is made from methyl alcohol by __________.
(Dehydrogenation, Dehydrohalogenation, Oxidation, Reduction)
42. Dry
distillation of calcium formate yields __________.
(Ether, formaldehyde, Acetic acid, none of these)
43. An
aldehyde is converted to carboxylic acid on __________ with K2Cr2O7 and H2SO4.
(Reduction, Oxidation, Dehydrogenation, all of these)
44. When
aldehydes are warmed with __________, red precipitates of cuprous oxide are
precipitated.
(Grignard’s Reagent, Fehlings solution, KMnO4, none of
these)
45. Aldehydes
can be distinguished from Ketons by using __________.
(Schiff’s reagent, Concentrated sulphruric acid, Anhydrous
Zinc chloride, Resorcinol)
46. In
ketons the two bonds of the carbonyl are attached to two __________.
(alkyl group, aryl group, hydrogen group, alkyl group and
aryl group)
47. Formation
of acetaldehyde from ethanol is called __________.
(Addition, Reduction, Oxidation, Substitution)
48. Aldehydes
can be distinguished from ketons by __________.
(AgNO3, CH3COOH, conc. H2SO4, Fehlings solution)
49. Acetaldehyde
reacts with __________.
(nucleophiles only, electrophiles only, free radicals only,
both with nucleophiles and electrophiles)
50. When
aldehydes are warmed with a ammonical solution of silver nitrate, they
precipitated metallic silver which often form a mirror. This reaction is called
__________.
(Tollen’s Test, Fehlings Test, Idoform Test, none of these)
51. Acetaldehyde
reacts with ammonia to form __________.
(Condensation products, substitution products, addition
product, resin like product)
52. __________
prepared the first synthetic plastic, by combing formaldehyde with phenol under
heat and pressure.
(Newlands, Blackeland, Russel, Charles)
53. __________
is used medically as a urinary antiseptic.
(Formaldehyde, Benzene, Sulphuric acid, Methanamine)
54. Aldol
condensation can occur between __________.
(an aldehyde and ketone, an aldehyde and ester, an aldehyde
and benzene, none of these)
55. Aldol
condensation between __________ of the following compounds, followed by
dehydration gives methyl vinyl ketone.
(HCHO and CH3COCH3, HCHO and CH3CHO, Two molecules of
CH3CHO, Two molecules of CH3COCH3)
56. Aldol
condensation can occur between __________.
(two aldehydes (identical or different), an aldehyde and
ester, an aldehyde and benzene, none of these)
57. Aldol
condensation can occur between __________.
(two aldehydes and phenols, two ketons(identical or
different), an aldehyde and benzene, none of these)
58. A
nucleophilic addition of carbonion, generated by the loss of proton from a-position
of an aldehyde or a ketone by a base, to the carbonyl group, is called
__________.
(Nitration, Aldol Condensation, Esterification, none of
these)
59. The
aldehydes having no hydrogen attached to a-carbon atom when treated with
concentrated solution of an alkali, undergo self-oxidation and reduction,
forming a mixture of an alcohol and a salt of corresponding carboxylic acid.
The reaction is known as __________.
(Fehlings reaction, Cannizzaro reaction, Formalin reaction,
none of these)
60. An
aqueous solution containing about 40% of formaldehyde and a little alcohol is
sold under the name of __________.
(Formalin, Malt-sugar, Pyridine, Starch)
61. Gelatine,
a substance readily soluble in water, becomes insoluble when it is treated with
__________.
(Formalin, Malt sugar, Benzene, Resins)
62. __________
is used as preservative for biological specimens.
(Benzene, Ketone, Alcohol, Formaline)
63. Alive
polio virus in the culture fluid is made harmless by addition of __________ in
the processing of anti-virus vaccine.
(Benzene, Acetic acid, formaldehyde, Carboxylic acid)
64. Acetic
acid is manufactured from the brown aqueous distillate known as __________
which is obtained by the destructive distillation of wood and contains a
mixture of acetic acid, acetone and methyl alcohol.
(Formalin, Pyroligenous acid, Pyridine, Acetylene)
65. The
most general method of preparing __________ is by oxidation of corresponding
aldehydes or primary alcohols.
(Phenols, Carboxylic acids, ketones, none of these)
66. The
chemical properties of the carboxylic acids depend chiefly on the __________.
(Hydroxyl group, Carbonyl group, Methyl group, none of
these)
67. __________
is used for coagulating rubber and latex and curing fish as well.
(Alcohol, Acetic acid, Wood spirit, none of these)
68. Ethyl
acetate is an example of a important class of substance known as __________.
(Ketones, Esters, Alcohols, none of these)
69. Ethyl
acetate (an ester) can be prepared by the action of __________ on carboxylic
acid, in the presence of acidic media.
(Phenols, Formalin, Pyradine, Alcohol)
70. Molecular
hydrogen in presence of suitable catalysts reduces carbonyl compounds to __________.
(aCetones, Ethers, Esters, Alcohols)
71. __________
is used as a nail-polish remover.
(acetone, Benzene, Idoform, none of these)
72. Acetone
may be converted into propane by heating with __________.
(conc HCl and 24/Hg, Mg + H2O, conc HI and red P, Zn/Cu
couple and ethanol)
73. __________
is the solvent used in the preparation of Grignard’s reagent and in Wurtz
reaction.
(Ethers, Phenoles, Ketons, Alcohols)
74. The
hydroxyl group derivatives of aromatic hydrocarbons, which have the –OH group
directly bonded to the ring carbon atoms are called __________.
(Esters, Acetons, Alcohols, Phenols)
75. Carbolic
acid is prepard from __________.
(Dow’s Process, Down’s Process, Nelson’s Process, none of
these)
76. Phenol
is colourless, poisonous __________.
(Liquid, Gas, Solid, none of these)
77. Above
__________ °C phenol is miscible with water in all proportions, but below this
temperature, it is only partially miscible.
(78.5, 68.5, 58.5, none of these)
78. Phenol
is reduced to __________ when its vapours are passed over red hot zinc dust or
distilled in the presence of zinc dust.
(Alcohol, Benzene, acetone, none of these)
79. Action
of zinc with alkyl halide in the presence of an inert solvent forms a
corresponding higher alkane. This is called __________.
(Wurtz’s reaction, Frankland’s reaction, Hoffman’s reaction,
none of these)
80. The
hydrolysis of alkyl halides by heating with aqueous alkali is a __________
substitution reaction.
(Electricphilic, Nucleophilic, Electrophilic and
Nucleophilic, none of these)
81. __________
is prepared by heating methyl iodide with fresh magnesium turnings in anhydrous
ether.
(Grignard’s reagent, Mustards gas, Benzene, none of these)
82. Dry
carbon dioxide is passed through Grignard’s reagent in the presence of
__________.
(Acetone as a solvent, Benzene as a solvent, Ether as a
solvent, none of these)
Chapter 10
Chemistry of Life
1. Starch
is a polymer of __________.
(Glucose, Fructose, Lactose, Maltose)
2. A
material cannot be termed as food unless it contains at least one __________.
(Vitamine, Mineral, Nutrient, Amino acid)
3. On
heating glucose with Fehling’s solution we get a precipitate of colour
__________.
(Yellow, Red, Black, Green)
4. It
is the best to carry out reactions with sugars in neutral or acid medium and
not in alkaline medium. This is because in alkaline medium sugars undergo
__________ of the following changes.
(Racemisation, Decomposition, Inversion, Rearrangement)
5. __________
food component regulates body processes.
(Minerals, Fats, Proteins, Carbohydrates)
6. The
process by which large non-diffusuble organic molecules are converted into
smaller diffusible molecules is known as __________.
(Ingestion, Fermentation, Decomposition, Digestion)
7. The
solution of sugar in water contains __________.
(Free atoms, Free ions, Free molecules, Free atoms, and free
molecules)
8. During
digestion carbohydrates are broken down to __________.
(Glucose, Amino acids, Fatty acids, None of these)
9. During
digestion proteins are broken down to __________.
(Glucose, Amino acids, Fatty acids, none of these)
10. __________
of the following gives a deep blue colour with a drop of dilute solution of
iodine.
(Cellulose, Glucose, Starch, Sugar)
11. During
digestion fats are broken down to __________.
(Glucose, Amino acids, Fatty acids, none of these)
12. The
use of the products of digestion in synthesis of cellular structure is known as
__________.
(Metabolism, Assimilation, Homeostasis, None of the above)
13. The
percentage of glucose in human blood is __________.
(0.1, 0.2, 9.3, 0.4)
14. Carbohydrates
supply about __________ of energy per gram.
(4 kcal, 2 kcal, 2 kcal, 1 kcal)
15. The
main source of cellulose is __________.
(cotton, wood, both cotton and wood, none of these)
16. Fats
provide about __________ of energy per gram.
(4kcal, 2 kcal, 9kcal, 5kcal)
17. Of
the following, __________ is a high-energy food.
(Proteins, Fats, Carbohydrates, none of these)
18. Glucose
and fructose are __________.
(Geometrical Isomers, Metamers, Optical Isomers, none of
these)
19. __________
isomers of glucose are known.
(4, 8, 16, 32)
20. The
digestion of carbohydrates begins with the mastication in the mouth, where
enzyme __________ of the saliva hydrolyses some of the starch to maltose.
(Ptyalin, Amylase)
21. Human
body tissue contains __________% carbohydrates.
(1, 2, 3, 4)
22. Carbohydrates
are ultimately converted into glucose and other simpler products in the
__________.
(Mouth, Stomach, Small intestine, Large intestine)
23. The
use of products of digestion in synthesis of cellular structures is called
__________.
(Assimilation, Metabolism, Excretion, Digestion)
24. The
products of oxidation of glucose are __________.
(Carbon dioxide and water, Oxygen and Hydrogen, Carbon
dioxide and hydrogen, none of these)
25. Glucose
is termed as __________.
(Single nutrient food, double nutrient food, multi nutrient
food, none of these)
26. Deficiency
of all nutrients leads to __________.
(Nutrition, Malnutrition, Under Nutrition, none of these)
27. The
recommended daily intake of protein per kilogram of the body weight is
__________.
(0.8 gm, 0.9 gm, 0.6 gm, 1.0 gm)
28. Lipids
and Proteins are made of __________.
(Macromolecule, Micromolecule, Microatom, None of these)
29. The
digestion of proteins begins in the __________.
(Mouth, Stomach, Small intestine, Large intestine)
30. The
enzyme __________ of gastric juice, catalyses the hydrolysis of peptide linkage
in protein molecules.
(Renin, Trypsin, Pepsin, Amylase)
31. In
the mouth of some of the starch is hydrolyzed to maltose by the action of
enzyme __________.
(Ptylin, Lipase, Renin, Amylase)
32. In
the body dietary proteins are the source of __________,
(Amino acids, Fatty acids, Lipids, none of these)
33. A
large class of compounds that are polyhydroxy aldehydes or ketones, or
substances that yield such compounds upon acid hydrolysis are called
__________.
(Fats, Carbohydrates, Proteins, vitamins)
34. Plants
are able to synthesis their own carbohydrates from CO2 of the air and water
taken from the soil in the presence of sunlight and chlorophyll. This process
is called __________.
(Nutrition, Assimilation, Photosynthesis, Homeostasis)
35. Human
diet consist of 60 – 65% by mass of the average diet on __________.
(Fats, Carbohydrates, Proteins, vitamins)
36. Carbohydrates,
which have three to nine carbon atoms and are not hydrolysable are called
__________.
(Monosacchrides, Ddi-saccharides, Poly-saccharides, None of
these)
37. The
carbohydrates, which have three to nine carbon atoms and are not hydrolysable
are called __________.
((Monosacchrides, Ddi-saccharides, Poly-saccharides, None of
these)
38. The
balanced diet contains amount __________ per day.
(60 gm, 70 gm, 80 gm, 90 gm)
39. Glucose is __________.
(a monosacchride carbohydrate, a di-saccharide carbohydrate,
a poly-saccharide carbohydrate, none of these)
40. A
class of carbohydrates which are formed by the condensation of two or more
monosaccharide units with the loss of water molecules are called __________.
(Disaccharides, Poly saccharides, Pentoses, none of these)
41. Sucrose
is an example of __________.
(a monosacchride carbohydrate, a di-saccharide carbohydrate,
a poly-saccharide carbohydrate, none of these)
42.
On hydrolysis __________ is broken down into two
simpler sugars glucose and fructose.
(Glucose, Sucrose, Maltose, none of these)
43.
Glucose is also called __________.
(Dextrose, Maltose, Fructose, Mannose)
44.
Corn syrup contains __________.
(Glucose, Fructose, Mannose, Maltose)
45.
Fructose occurs in many __________.
(Cereals, Fruits, Vegetables, none of these)
46.
Honey is a mixture of __________.
(Glucose and Fructose, Glucose and Maltose, Fructose and
Mannose, Glucose and Fructose with vitamins and minerals)
47.
The carbohydrates, which contain hundreds to
thousands of monosacchride units are called __________.
(Polysacchrides, Oligosaccharides, Hexoses, None of these)
48.
Cellulose is an example of __________.
(Monosaccharides, Di-saccharides, Polysaccharides, None of
these)
49.
The main difference between starch and cellulose
is the type of links between __________.
(Mannose units, Glucose units, Fructose, units, none of
these)
50.
Vitamin was discovered by __________.
(Casimir Funk, Blackeland, Hopkins, Elmer)
51.
Vitamin A was discovered by __________.
(Elmer McCollum, Casimir funk, Hopkins, none of these)
52.
Vitamin D was discovered by __________.
((Elmer McCollum, Casimir funk, Hopkins, none of these)
53.
Fat-soluble vitamins are found associated with
__________ in natural foods.
(Renin, Lipids, Peptides, Maltose)
54.
Fat soluble vitamins include __________.
(Vitamin A, B, C, D, Vitamin A, B, C, Vitamin A, D, E, K,
Vitamin K)
55.
Water-soluble vitamins include __________.
(Vitamin A, B, Vitamin A, B, C, vitamin B, C, Vitamin A, C)
56.
Vitamin B1 is called __________.
(Thiamin, Riboflavin, Niacin, Pyridoxine)
57.
Vitamin B2 is called __________.
(Thiamin, Riboflavin, Niacin, Pyridoxine)
58.
Vitamin B5 is called __________.
(Thiamin, Riboflavin, Niacin, Pyridoxine)
59.
Vitamin B6 is called __________.
(Thiamin, Riboflavin, Niacin, Pyridoxine)
60.
Vitamin B12 is called __________.
(Cyanocoalamine, Riboflavin, Niacin, Pyridoxine)
61.
Most water-soluble vitamins act as __________.
(Enzymes, Coenzymes, Coenzymes or are required for the
synthesis of coenzymes, none of these))
62.
People who consume too much vitamin __________,
may develop bone pain, bone like deposits in the kidneys, and mental
retardation.
(A, B, C, D)
63.
Edible lipids constitute approximately
__________ % of the diet of an average person.
(25-28, 25-30, 25-32, 25-35)
64.
The most important energy storage compounds in
the animal kingdom are __________.
(Peptides, Lipids, Amino acids, none of these)
65.
Plants store most of the energy in the form of
carbohydrates primarily as __________.
(Amino acids, Starch, Cellulose, Maltose)
66.
The nutrients of our food which provide
insulation for the vital organs, protecting them from electrical shocks and
maintaining optimum body temperature are called __________.
(Amino acids, Steroids, Lipids, Fatty acids)
67.
Lipids that contain both polar and non polar
groups are integral components of __________.
(Cell wall, Cell membrane, Cytoplasm, Mitochondria)
68.
Steroids is an important type of __________.
(Proteins, Vitamins, Lipids, Carbohydrates)
69.
The most abundant and the most important steroid
in the human body is __________.
(Riboflavin, Cholestrol, Folic acid, Inositol)
70.
__________ is an important precursor in the
biosynthesis of sex-hormones, synthesis of adrenal hormones and vitamin D.
(Insitol, Cholestrol, Lipoic Acid, Biotin)
71.
On the average, more than 50% of the total dry
weight of the cells is composed of __________.
(Carbohydrates, Proteins, Fats, Water)
72.
The Dutch chemist, GJ Mulder (1883), is credited
as being one of the first scientists to recognize the importance of __________.
(Vitamins, Carbohyrates, Proteins, Fats)
73.
__________ organic compound is a major
structural component of an animal tissue.
(Carbohydrates, Proteins, Cellulose, Lipids)
74.
Hormones are made of __________.
(Proteins, Fats, Carbohydrates, Lipids)
75.
Antibodies are __________.
(fats in nature, carbohydrates in nature, protein in nature,
vitamins in nature)
76.
Enzymes are __________.
(carbohydrates in nature, proteins in nature, fats in
nature, none of these)
77.
Haemoglobin is a __________.
(Protein, Carbohydrate, Fat, Mineral)
78.
The primary function of proteins is __________.
(Energy supply, body building, body building and
maintenance, protection of body)
79.
__________ nutrients of food are stored by the
body as energy reserves.
(Carbohydrates and lipids, proteins and lipids, proteins and
carbohydrates, none of these)
80.
for a normal adult with a constant weight, the
recommended daily intake of protein is approximately __________ gram per kg of
body weight.
(0.2, 0.4, 0.6, 0.8)
81.
33% - 43% protein is present in __________.
(Food yeast, Soya bean, Rice, Cheese)
82.
The percentage of protein in chicken food is
__________%.
(28, 21, 33, 12)
83.
The protein in milk is __________%.
(2, 3, 12, 19)
84.
Fats are esters of glycerol and __________.
(Faty acids, Lipids, Steroids, none of these)
85.
The percentage of protein in egg is __________%.
(12-18 , 12-24, 12-36, 12-48)
86.
The percentage of protein in flour is
__________%.
(18, 12, 6, 3)
87.
The percentage of protein in fish is
__________%.
(18-21, 12-18, 6-36, 3-9)
88.
The percentage of protein in rice is
__________%.
(6-7, 2-3, 5-11, 11-19)
89.
The percentage of protein in fresh vegetables is
__________%.
(5-6, 7-17, 4-7, Rarely contains 2-3)
90.
Amino acids are the building blocks of
__________.
(Carbohydrates, Proteins, Lipids, Fats)
91.
Proline amino acids have __________ group and
–COOH group attached to the same carbon atom.
(-NH3, -NH2, -NH, -OH)
92.
Amino acids are widely classified __________.
(according to the number of –NH2 group, according to the number
of –COOH group, according to polarity of their side chain, all of these)
93.
The first amino acid was isolated in 1806 and
was given the name __________.
(Asparangine, Glycine, Renin, Maltose)
94.
The major amino acid found in gelatin is
__________.
(Glycine, Asparangine, Renin, none of these)
95.
Esters of Glycerol and Fatty acids are called
__________.
(Acids, F, Proteins, Carbohydrates)
96.
Among the most important of the natural
__________ are the cotton seed oil, corn oil, butter, tallow and olive oil.
(Fats, Proteins, Carbohydrates, Vitamins)
97.
Unsaturated vegetable oils, such as cotton seed
oil are converted into fast on __________.
(Oxidation, Dehydration, Hydrogenation, Sulphonation)
98.
The hydrogenation of oils is accomplished easily
by bubbling hydrogen into the oil in the presence of catalyst __________.
(Pt, Ni, Zn, ZnO)
99.
Naturally occurring fatty acid nearly always
have an/a __________ number of carbon atoms.
(Even, Odd, Even and odd, none of these)
100. Liquid
fats are called __________.
(Fatty acids, Oils, Ketones, Lipids)
101. The
degree of undaturation of a fat or oil is usually measured by the __________.
(number of carbon atoms, number of hydrogen atoms, iodine
number, none of these)
102. The
number of grams of iodine that will be consumed by 100 grams of fat or oil is
called __________.
(Iodine complex, Iodine number, Iodoform, None of these)
103. Brain
cells are made of __________.
(Proteins, Fats, Carbohydrates, Lipids)
104. Nerve
tissues are made of __________.
(Fats, Proteins, Carbohydrates, Steroids)
105. Fat-soluble
vitamins are obtained from __________.
(Carbohydrates, proteins, fats, lipids)
106. Vegetable
oils such as peanut oil contain vitamin __________.
(A, B, C, E)
107. Milk
fat, butter, cream, and fish liver oil contain vitamin __________.
(A, B, C, A and D)
108. Our
balanced diet contains 70 grams per day of __________.
(Carbohydrates, Proteins, Fats, None of these)
109. About
35% of our daily caloric requirements are obtained from __________,
(Carbohydrates, Proteins, Fats, Vitamins)
110. __________
is the term used to reflect the development of any disagreeable odour in the
fat or oil.
(Acidity, Basicity, Rancidity, none of these)
111. Two
principal chemical reactions responsible for causing rancidity are __________.
(Oxidation and Hydrogenation, Oxidation and Hydrolysis, Hydrolysis and
fermentation, Oxidation and Pyrolysis)
112. The
reaction of fat with a strong base such as NaOH to produce glycerol and the
salt of a fatty acid is used to produce __________.
(Soap, Glucose, Vegetable oil, Gastric Juice)
113. The
word enzyme has a __________.
(Greek origin, Latin origin, Roman origin, Arabic origin)
114. In
living systems enzymes catalyze reactions at __________°C.
(0, 25, 100, 37)
115. The
substance upon which an enzyme acts is known as its __________.
(base, substrate, nutrient, pair)
116. The
amount of enzyme, which will catalyze the transformation of one micro-mole of a
substrate per minute is termed as __________.
(Substrate, potency, activity, specific activity)
117. Units
of enzyme per milligram of proteins are termed as __________.
(activity, potency, turn over, none of these)
118. The
number of moles of substrate transformed per mole of enzyme per minute at a
definite temperature is called __________.
(Potency, Turn over, Activity, none of these)
119. Enzymes
are most commonly named by adding the suffix to the root of the name of the
substrate __________.
(ose, ase, ane, ene)
120. Urease
acts upon __________.
(Sucrose, Urea, Ammonia, Starch)
121. Sucrose
is also called __________.
(invertase, Urea, Renin, Amylase)
122. __________
is an enzyme.
(Sucrose, Sucrase, Maltose, Urea)
123. __________
enzyme was first obtained by grinding pancreatic tissue with glycerol.
(Amylase, Urea, Ascorbic Acid Oxidase, Trypsin)
124. The
site of the enzyme, which combines with the substrate, and at which
transformation from substrate to products occurs, is called he __________.
(Cellular site, Active site, Vacant site, Complex)
125. The
main factors, which effect enzyme activity, are __________.
(concentration, temperture and pH,
concentration, temperature, pH and co-enzymes, concentration, temperature, pH,
co-enzymes (activators and inhibitors) and radiation, coenzymes, activators and
inhibitors)
126. The
majority of enzymes are most active at about __________ °C.
(35, 45, 55, all of these)
127. Many
enzymes contain a protein part and a non-protein part. The protein part is
called the __________.
(Apoenzyme, Coenzyme, Enzyme, none of these)
128. The
non-protein part in enzyme is termed as __________.
(Apoenzyme, coenzyme, substrate, all of these)
129. Examples
of co-enzymes are __________.
(Vitamins, Compounds derived from vitamins, Vitamins or compounds
derived from vitamins, all of these)
130. In
organic substances that tend to increase the activity of an enzyme are called
__________.
(activators, Inhibitors, Apoenzymes, coenzymes)
131. Magnesium
ion is an inorganic activator for the enzyme __________.
(Trypsin, Carbonic anhydrate, Sucrase, Phosphatase)
132. Zinc
ion is an activator for the enzyme __________. friendsmania.net
(Amulase, Carbonic anhydrase, Renin, Phosphatase)
133. Substances,
which tend to decrease the activity of enzyme are called __________.
(Activators, Accelerators, Inhibitors, Retarders)
134. Enzymes
are generally inactivated rapidly by exposure to __________.
(Ultraviolet light, b-rays, g-rays, X-rays, all of these)
Chapter 11
Chemical Industries in Pakistan
1. The
substances added to the soil to provide one or more nutrient elements essential
for plants growth are called __________.
(Growth hormones, Minerals, Fertilizers, Salts)
2. The
substances added to the soil in very small amounts (about 6 grams to 200 grams
per acre) are called __________.
(Macronutrients, Micronutrients, Fertilizers, none of these)
3. Fertilizers
are classified into __________.
(two major categories, three major categories, four major
categories, none of these)
4. Natural
fertilizers are materials derived from __________.
(plants, animals, algae, all of these)
5. A
natural fertilizer provide about __________ kg of nitrogen.
(4.5, 3.2, 2.2, 1.5)
6. A
natural fertilizer provides __________ kg of P2O5.
(4.5, 3.2, 2.2, 1.5) A
7. A
natural fertilizer provides __________ kg of potash (K2O).
(4.5, 3.2, 2.2, 1.5)
8. The
percentage of nitrogen in ammonia is __________%.
(32, 55, 82, 25)
9. The
percentage of nitrogen in ammonium Nitrate is __________%.
(32-33.5, 50-55, 80-82, 20-25)
10. The
percentage of nitrogen in ammonium sulphate is __________%.
(27, 21, 23, 19)
11. The
percentage of sulphur in ammonium sulphate is __________%.
(25, 21, 23, 19)
12. The
percentage of nitrogen in Urea is __________%.
(37, 50, 46, 82)
13. Ammonia
when used directly as a fertilizer is to be injected about __________ under the
surface to keep it from seeping out.
(2 inches, 4 inches, 6 inches, 8 inches)
14. Ammonium
nitrate is sold as a mixture with __________.
(Soda Ash, Limestone, Zinc, None of these)
15. The
percentage of nitrogen in Diammonium hydrogen phosphate is __________%.
(16, 48, 32, 64)
16. The
percentage of P2O5 in diammonium hydrogen phosphate is __________%.
(16, 32, 48, 64)
17. A
fertilizer; potassium chloride is sold as __________.
(Muriate of potash, Mixture of potash, Potency of potash,
none of these)
18. The
percentage of K2O in potassium chloride is __________%.
(60-63, 50-70, 40-80, 30-90)
19. Potassium
sulphate with 48% to 52% potash, is made from __________.
(Potassium Phosphate, Potassium Chloride, Potassium Nitrate,
none of these)
20. __________
is preferred for horticultural crops and for tobacco and potatoes.
(Potassium chloride, Potassium sulphate, Potassium Nitrate
None of these)
21. __________
is used for fruits, vegetables and tobacco.
(Potassium chloride, Potassium sulphate, Potassium Nitrate
None of these)
22. Any
material, which changes the cleaning effect of water, is called __________.
(Fertilizers, Detergent, Acid none of these)
23. __________
are sodium and potassium salt of long chain fatty acids.
(Soaps, Detergents, Fertilizers, None of these)
24. __________
contain sodium or potassium salts of aryl or alkly sulphonated acids as one of
their constituents.
(Soaps, Detergents, Fertilizers, none of these)
25. Soap
is a surfactant of the type __________.
(anionic, cationic, nonionic, none of these)
26. __________
is best in its cleaning action.
(Soap, Detergents, Surfactant, None of these)
27. Hydrolytic
reaction of fat with caustic soda is known as __________.
(Esterification, Saponification, Acetylation, Carboxylation)
28. Turpentine
is obtained from __________.
(Oak tree, Pine tree, Birch tree, Lemon tree)
29. __________
surfactants perform well over a wide range of water hardness and pH.
(Anionic, Cationic, Nonionic, none of these)
30. Fats
and oils are __________.
(Acids, alcohols, salts, none of these)
31. Washing
soap can be prepared by saponification with alkali of __________ of the
following oil.
(Rose oil, Paraffin oil, Groundnut oil, Kerosene oil)
32. Commercial
detergents contain mainly __________.
(RCOON, RONa, RSNa, ROSO3Na)
33. Sodium
tripolyphosphate is __________.
(a surfactant, a builder, a auxiliary agent, none of these)
34. In
glass or vitreous state solid the atoms are arranged in __________.
(Regular fashion, Random fashion, Linear fashion, none of
these)
35. Glass
was first made by about __________.
(40BC, 400BC, 4000BC, none of these)
36. The
number of glass products now manufactured is __________.
(25,000, 50,000, 75,000, none of these)
37. The
substance that can form the glassy, non-crystalline structure is called
__________.
(Formers, Fluxes or modifiers, Stabilizers, none of these)
38. The
principle former of almost all glasses is __________.
((SiO2)n, (SiO3)n, (SiO2)X, none of these)
39. Chemical
compounds, which are added to reduce the reactivity of glass, are called
__________.
(Formers, Modifiers, Stabilizers, none of these)
40. __________
is used as stabilizer.
(Ca2O, SiO2, Na2O, none of these)
41. In
glass making the whole combination of ingredients is called a __________.
(Gangue, Batch, Mixture, none of these)
42. The
melting of nearly all glass is done in a continuous tank furnace, which
operates steadily over periods of up to __________.
(a day, a month, a year, none of these)
43. __________
is a heat-treatment cycle that prevents glass from harmful stress.
(Forming, Annealing, Batching, none of these)
44. __________
is used for Annealing.
(Klin, Batch, Converter, Oven)
45. The
main constituents of __________ are boron oxide and silica.
(Pyrex glass, Soda-lime glass, Low silica glass, Fibrous
glass)
46. In
Pakistan how many units are involved in the production of glass __________.
(20, 25, >25, none of these)
47. In
Pakistan the total production of glass is over __________ tons per year.
(800, 8000, 80,000, none of these)
48. Asbestos
is a __________.
(Mineral fibre, Animal fibre, Vegetable fibre, none of
these)
49. __________
is the fibre in which the basic polymer (fibre forming substance) is a long
chain composed of least 85% by weight of Acrylonitrile units.
(Acrylic Fibre, Modacrylic fibre, Polyster fibre, Rayon
Fibre)
50. The
fibre, which has less than 85% but more than 35% proportion by weight, of acrylonitrile
units is called __________.
(Acrylic fibre, Modacrylic fibre, Polyster fibre, Rayon
fibre)
51. __________
is the fibre in which the fibre-forming substance is a long chain synthetic
polymer composed of at least 85% by weight of an ester of a dihydric alcohol
and terephthalic acid.
(Acrylic fibre, Modacrylic fibre, Polyster fibre, Rayon
fibre)
52. __________
is a fibre composed of regenerated cellulose in which substituents have
replaced nor more than 15% of the hydrogen of the hydroxyl group.
(Acrylic fibre, Modacrylic fibre, Polyster fibre, Rayon
fibre)
53. __________
compound contains cellulose acetate as fibre forming substance.
(Acrylic fibre, Modacrylic fibre, Acetate fibre, Rayon
fibre)
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