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NAT I Engineering Chemistry MCQs With Answers
Question # 1
In which of the following elements +1 oxidation state is more stable than +3
Choose an answer
B
AI
Ga
Ti
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Question # 2
Which of the following represents elements in order of increasing atomic size?
Choose an answer
I,Br,CI
Na,Mg,C
C,N,O
Li,Na,K
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Question # 3
At 500 K the equilibrium constant for reaction cis-C
2
H
2
CI
2
trans-C
2
H
2
CI
2
is 0.6. At the same temperature the equilibrium constant for the reaction trans-C
2
H
2
CI
2
cis-
C
2
H
2
CI
2
will be
Choose an answer
0.60
1.67
0.66
2.6
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Question # 4
Which of the following has greatest reducing power?
Choose an answer
HI
Hbr
HCI
HI
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Question # 5
Which of the following fluorides of xenon in impossible?
Choose an answer
XeF
2
XeF
3
XeF
4
XeF
6
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Question # 6
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 # 7
Mark the smallest atom
Choose an answer
F
CI
Br
I
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Question # 8
Propyne on hydrolysis in presence of H
2
SO
4
and HgSO
4
gives
Choose an answer
Acetaldehyde
Actone
Formaldehyde
None
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Question # 9
The digestion of fats in the intestines is aided by
Choose an answer
Diffusion
Protection
Peptization
Emulsification
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Question # 10
The percentage of nitrogen in urea is
Choose an answer
46
60
70
80
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Question # 11
For the reaction
2A(g) + B(g) 3C(g) + D(g)
two moles each of A and B were taken into a flask The following must always be true when the system attained equilibrium
Choose an answer
[A] = [B]
[A] < [B]
[B] = [C]
[A] > [B]
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