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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Sodium thiosulfate is used in photography because of its
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Oxidizing behaviour
Reducing behaviour
Complexing behaviour
Photochemical behaviour
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Question # 2
Which of the following is not present in RNA?
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Uracil
Thymine
Ribose
Phosphate
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Question # 3
Crystal can be classified in to basic crystal habits
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7
4
14
3
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Question # 4
All the naturally occurring processes proceed spontaneously in a direction which lead to
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Decrease of entropy
Increase of enthalpy
Increase of free energy
Decrease of free energy
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Question # 5
Which of the following will not change the concentration of ammonia in the equilibrium N
2
(g) + 3H
2
(g) 2NH
3
(g): ΔH = -kj
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Increase of pressure
Increase of temperature
Decrease of volume
Addition of catalyst
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Question # 6
Which of the following geometry is associated with the compound in which the central atom assumes sp
3
d hybridization?
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Planar
Pyramidal
Angular
Trigonal bipyramidal
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Question # 7
At room temperature formaldehyde is
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Gas
Liquid
Solid
None of the above
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Question # 8
Which metal is protected by a layer of its own oxide?
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AI
Ag
Au
Fe
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Question # 9
The rate at which a substance reacts depends on its
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Atomic weight
Equivalent weight
Molecular weight
Active mass
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Question # 10
Which one is not a pollutant normally?
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Hydrocarbons
Carbon dioxide
Carbon monoxide
Sulphur dioxide
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Question # 11
Propyne on hydrolysis in presence of H
2
SO
4
and HgSO
4
gives
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Acetaldehyde
Actone
Formaldehyde
None
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