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NAT I Engineering Chemistry MCQs With Answers
Question # 1
Variable valency is generally exhibited by
Choose an answer
Normal elements
Transition elements
Metallic elements
None of these
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Question # 2
Which has largest first ionization energy?
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Li
Na
K
Rb
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Question # 3
Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about
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Two inches
Three inches
Five inches
Six inches
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Question # 4
Which of the following is directly related to Qualitative analysis?
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Identification
Separation
Measurement
Calculation
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Question # 5
The unit of rate constant for a zero order reaction is
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Liter sec
-1
Liter
mol
-1
sec
-1
Mol liter
-1
sec
-1
Mol
sec
-1
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Question # 6
If N
A
is Avogadro's number then number of valence electrons in 4.2 g of nitride ions N
3-
is
Choose an answer
2.4 N
A
4.2
N
A
1.6
N
A
3.2
N
A
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Question # 7
Which of the following is acidic?
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SO
3
N
2
O
BeO
HgO
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Question # 8
Which of the following is different from the other three oxides?
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MgO
SnO
ZnO
Cr
2
O
3
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Question # 9
Bleaching action of bleaching powder is due to the liberation of
Choose an answer
O
2
OCI
-
CI
2
CI
-
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Question # 10
Which of the following process is used to separate insoluble particles from liquids?
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Separation
Filtration
Crystallization
Condensation
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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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