Important Chemistry MCQs entry test
Q.1: The last digit of a number is generally considered
uncertain by ±1 in the absence of qualifying information.
(a) +1 (b)
- 1
(c) +/-1 (d)
None of these
Q.2: C + O2 → CO2, when 13 g of carbon is
treated with 45g oxygen to produce
CO2, the___________ is limiting reactant.
(a)
Carbon (b) Oxygen (c)
both a & b (d)
None of these
Q.3: The ______
mass of NaCl is 58.
(a)
Molar (b) Molecular (c)
both a & b (d) None
of these
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Q.4 A process in which a gaseous substance changes into liquid
substance is called ______
(a)
melting (b)
boiling (c) condensation (d)
None of these
Q.5: 273ºC =
(a) Zero K
(b)
273K (c) 546K (d)
None of these
Q.6: A container
is filled with CO2 & H2 gas, then which gas is
assigned as r1 According to Dalton’s law of partial pressure?
(a)
H2 (b)
CO2 (c) CO2
+ H2 (d)
None of these
Q.7: The mass of
atmosphere on our body at sea level at 0ºC is ______
(a)
1atm (b) 760 torr (c)
14.7 psi (d) None
of these
(a) Increase
(b) decrease (c)
constant (d) None of these
Q.9: Anode rays
are produced from____
(a)
Anode (b) cathode (c)
both a & b (d)
None of these
Q.10: An anion is
_____ than its parent atom in atomic size
(a) Smaller
(b)
larger (c)
same (d) none
of these
Q.11: How many
chemical bonds are present in O2
molecule?
(a)
1 (b)
2 (c) 4 (d)
none of these
Q.12: kc is a
ratio of ________
(a) reactant/product (b)
product/reactant (c)
both a & b (d) None of these
Q.13: If a
solution has PH=0 then the solution is _______ in nature.
(a) Acidic (b) basic
(c)
neutral (d) None of these
Q.14: Activation
energy is ___ proportional to the rate of reaction.
(a)
Directly (b)
inversely (c) neutral (d)
None of these
Q.15: An element which has
ns²-electronic configuration is placed in group of Modern periodic table.
(a) Alkali metals (b)
Halogen (c)
Alkaline earth metals (d) none of
these
Q.16: The atoms which have same No: of
valence electrons will show similar ____
(a) Physical properties (b) chemical
properties (c)
both a & b (d) none of these
Q.17: CH3
− CH2 − OH & CH3
− O − CH3 , these compounds are ______of each other.
(a) Chain isomers (b)
Position isomers (c)
Functional group isomers (d)
N.O.T
(a)oxidation
(b)
reduction (c) auto oxidation-reduction (d) None of These
Q.19: Elimination
Reaction is a reveres of _________ reaction
(a)
Addition
(b) substitution (c) combustion (d)
None of These
Q.20:
Galactose and Fructose are ___________ carbohydrates.
(a) Mono-Saccharides (b)Oligo-Saccharides (c)poly-Saccharides (d) N.O.T
Q.21: The food is classified into _______ classes.
(a) Three (b)
five (c)
six (d)
N.O.T
Q.22: The closed chain forms of glucose are also
represented in hexagonal forms called structure.
(a) Pyranose (b)
glucase (c)
both a & b (d)
N.O.T
Q.23: Fructose is a structural isomer of __________
(a) Galactose
(b)
Fructose (c) glucose
(d)
N.O.T
Q.24: On the basis of source the fertilizers have been
classified into _____ classes.
(a)
Two (b)
Five (c)
Seven (d) N.O.T
Q.25: Any material which increases the cleaning effect of
water is called as_____.
(a) Acid
(b)
base (c)
neutral (d) N.O.T