Chemistry MCQs second year of Chapter 5
The MCQs are solved.Red colour indicates the correct answer.
a.
Dioxygen trifluoride b. Dioxygen
difluoride
c.
Oxygen difluoride d. Oxygen
& fluorine
2.
I2O4 and
I2O9 are salt like and
a.
Are considered as iodine salt b.
Are used in table salt
c. Are
called as iodine – iodates d. None
of them
3.
Reaction of HClO4 with P2O5 produces
a.
Chlorine heptaoxide b. Chlorine dioxide
c.
Dichlorine monoxide d.
Chlorine hexaoxide
4.
Reaction of bromine vapours with mercuric oxide yields
a.
Bromine dioxide b. Bromine
trioxide
c. Bromine
monoxide d. All
of them
5.
Iodine pentaoxide acts as
a.
An oxidizing agent b. Reducing
agent
c.
Bleaching agent d.
Dehydrating agent
6.
HClO2 is called
a.
Hypochlorous acid b. Chlorous acid
c.
Perchloric acid d.
None of them
7.
Which compound is used for the quantitative analysis of CO?
a.
O3F2 b. ClO2
c.
Br2O d. I2O5
8.
Bleaching powder can be manufactured by
a.
Hasenclever’s method b. Beckmann’s method
c.
Both a & b d. None of them
9.
Bleaching powder oxidizes NH3 & yields
a.
Chlorine gas b. Nitrogen gas
c.
NH4Cl d. None
of them
10. Freon is the
commercial name of
a.
fluorochlorcarbons b. Tetrafluoroethylene
c.
Fluoroethylene d.
None of them
11. Halothane is
used as
a.
Disinfectant b. Anaesthetic c. Fungicicle d.
Insecticide
12. Which one of
the following halides has the highest lattlice energies?
a.
Iodides b. Chlorides
c. Fluorides d. None of them
13. Which one of
the following Halogens has the highest oxidizing power?
a.
F
b.
Cl c.
I d.
Br
14. Which one of
the following Halogens can oxidize all other halide ions to molecular Halogen?
a.
Cl b. F c.
I d.
Br
15. All halogens
react with ________ to form hydrides.
a.
H2O b. H c. H2SO4
d.
None of them
16. Which one of
the following halogens requires sunlight for the reaction with Hydrogen?
a.
Cl b.
Br c.
I d.
At
17. Direct
combination of Hydrogen and Halogen is used as preparative method for
a.
HCl b. HBr c. HI d. Both a and b
18. Hydrogen
fluoride is stored in
a.
Glass containers b. Teflon containers
c.
Polythene containers d.
None of them
19. Which one of
the following Halogens is a radioactive element?
a.
F b. At c.
Cl d.
I
20. Half life of
Astatine is
a.
8.3 hours b. 9hours c. 4.3
hours d. 15 hours
21. Halogens exist
in nature as
a.
Atoms
b.
As discrete atomic forms
c.
As discrete molecular forms
d.
As ions
22. Chlorine has
the following colour
a.
Green b.
Yellow c. Greenish yellow d.
Pale
yellow
23. Bromine occurs
in nature as
a.
Liquid of red brown colour b.
Solid of red brown colour
c.
Gas of red brown colour d. None
of them
24. The outer shell
of Halogens have the following configuration
a.
ns2 , np3 b. ns2 , np4 c. ns2 , np5 d. ns1 , np6
25.
Which one of the following elements has the highest I. E?
a. F b.
Cl c.
Br d.
I
26. The electron
affinity values of Halogen are
a.
Large & negative b. Small & - ive c. Large & + ive d.
Small
& +ive
27. Elements with
intermediate values of electronegativity are often found as:
a.
Ions b. Molecules
c. Elemental
form d. All of these
28. The
intermolecular attraction is greater in
a.
Large molecules b.
Small molecules
c. Molecules
having small masses d. None
of them
29. Elements with
higher values of the E.N usually exist as
a.
Negative ions b. +
ive ions
c. Carbanions
d.
None of them
30. Universal
indicator can be decolorized when exposed to
a.
F2
b.
Cl2 c. Br2 d. Both
a and b
31. Oxidation state
of F is
a.
Const & - 1 b.
Variable & -1 , 1
c. Variable and – 1, 1, 2, 3 d.
None of them 32. Which of the following elements is solid?
a.
F b.
Cl c. I d.
Br
33. All halides are
usually
a.
Soluble in organic solvent b. Soluble
in H2O
c.
Soluble in CCl4 d.
All of them
34. Molecular
formula of Halite is
a.
CaF2 b. NaCl
c.
CaCl2 d. NaIO3
35. Carnallite is
represented by
a.
CaF2
. CaCo3 KI b. CaCl2
. MgCl2 . CuCO3
c. KCl . MgCl2 .
6 H2O d.
CaF2 . 3Ca3 (PO2)2
36. One of
following ores does not contain fluorine
a.
Fluorspar b. Cryolite c. Apatite
d. Carnallite
37. Electronic
configuration of Fluorine is
a.
[ He ] 2S2 , 2P5 b.
[ Ne ] 2S2 , 2P5
c.
[ Kr ] 3S2 , 3P5 d.
None of them
38. Hydrogen
bonding is strongest among the molecules of
a.
H2O b.
HF
c. NH3 d. NaCl
39. Which one of
the following halides has the greatest acid strength?
a.
HCl b. HBr c. HF d.
Hl
40. All the oxides
of Halogens are
a.
Basic in character b. Acidic in character
c.
Amphoteric in character d. All
of them
In case of any error or mistake,please do comment below.Also if you have any suggestion or simply liked these MCQs then do comment to encourage education helpers.
Stay happy.
In case of any error or mistake,please do comment below.Also if you have any suggestion or simply liked these MCQs then do comment to encourage education helpers.
Stay happy.
No comments:
Post a Comment
Feel free to comment.Team NUST is here to listen you.