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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Water (H2O) is liquid while hydrogen sulphide (H
2
S) is a gas because
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Water has higher molecular weight
Hydrogen sulphide is a weak acid
Sulphur has high electronegativity than oxygen
Water molecules associate through hydrogen bonding.
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Question # 2
Bleaching action of bleaching powder is due to the liberation of
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O
2
OCI
-
CI
2
CI
-
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Question # 3
How many kinds of space lattices are possible in a crystal?
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23
7
230
14
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Question # 4
The mass of the neutron is of the order of
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10
-23
kg
10
-24
kg
10
-26
kg
10
-27
kg
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Question # 5
Which has the largest radius?
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CO
3+
Mn
3+
Fe
3+
Cr
3+
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Question # 6
The formula of nitre is
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KNO
3
NaNO
3
NaCI
Na
2
CO
3
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Question # 7
Calcium acetate when dry distilled gives
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Formaldehyde
Acetaldehyde
Acetone
Acetic anhydride
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Question # 8
Octane number can be changed by
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Isomerisation
Alkylation
Cyclisation
All of these
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Question # 9
The formula of calcium cyanamide is
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Ca(CN)
2
CaC
2
N
CaNCN
CaCHNH
2
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Question # 10
Gooch crucible used to filter the solution of
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H
2
SO
4
HCI
KMnO
4
Both B & C
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Question # 11
The main structure features of proteins is
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An ester linkage
An ether linkage
The peptide linkage
All
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