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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Which one of the following compounds does not exist?
Choose an answer
NCI
5
AsF
5
SbCI
5
PF
5
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Question # 2
Acetic anhydride is obtained form acetyl chloride by the reaction of
Choose an answer
P
2
O
5
H
2
SO
4
CH
3
COONa
CH
3
COCH
3
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Question # 3
What quantity of limestone (CaCO
3
) on heating will give 56 kg of CaO?
Choose an answer
1000 kg
56 kg
44 kg
100kg
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Question # 4
The substance used as a smoke screen in warfare is
Choose an answer
SiCI
4
PH
3
PCI
5
Acetylene
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Question # 5
Ionic solids with defects contain
Choose an answer
Equal number of cation and anion vacancies
Interstitial anions and anion vacancies
Cation vacancies only
Cation vacancies and interstitial cations
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Question # 6
Which of the following does not reflect the periodicity of elements?
Choose an answer
Bonding behaviour
Electronegativity
Ionisation potential
Neutron/proton ratio.
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Question # 7
The disaccharide present in milk is
Choose an answer
Sucrose
Maltose
Lactose
Cellobiose
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Question # 8
An endothermic reaction is one in which
Choose an answer
Heat is converted into electricity
Heat is obsorbed
Heat is evolved
Heat is converted into mechanical work
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Question # 9
Which is not a colligative property?
Choose an answer
Osmotic pressure
Lowering of vapour pressure
Depression of freezing point
Elevation of boiling point
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Question # 10
Bell metal is an alloy of
Choose an answer
Cu,Zn,and Sn
Cu,Zn and Ni
Cu and Zn
Cu and Sn
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Question # 11
The maximum number of electrons in a subshell for which / = 3 is
Choose an answer
14
10
8
4
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