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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Acetic anhydride is obtained from 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 # 2
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
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Mercury
Lead
Nitrogen oxide
Sulphur oxide
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Question # 3
Which of the following has greatest tendency to lose electron?
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F
Fr
S
Be
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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
SO
2
and NO
2
produce pollution by increasing
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Alkalinity
Acidity
Neutrality
Buffer action
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Question # 6
The structure of XeF6
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Distorted octahedral
Pyramidal
Tetrahedral
None of the above
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Question # 7
The bond angle H-O-H in ice is closest to
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120
° . 28'
60
°
90
°
109
°
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Question # 8
Toluene can be oxidized to benzoic acid by
Choose an answer
KMnO
4
(alk)
K
2
Cr
2
O
7
(acidic)
Both
None
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Question # 9
The weight of 11.2 litres of CO
2
at S.T.P. would be
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88 g
44 g
32 g
22 g
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Question # 10
Which of the substances Na, Hg, S, Pt and graphite can be used as electrodes in electrolytic cells having aqueous solution?
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Na, Pt and graphite
Na and Hg
Pt and graphite only
Na and S only
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Question # 11
Crystal can be classified in to -------------- basic crystal habits
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7
3
14
3
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Question # 12
Isopropyl alcohol on oxidation forms
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Acetone
Ether
Ethylene
Acetaldehyde
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Question # 13
The carbon atoms in calcium carbide are held by
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Ionic bonds
Sigma bonds
2 covalent, one co-ordinate bond
2
π
and one
α bond
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Question # 14
DDT is formed from
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Benzene and Chlorobenzene
Chloral and Chlorobenzene
Chloral and benzene
Chlorobenzene and chlorine
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Question # 15
What happens when CCl
4
is treated with AgNO
3
solution?
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NO
2
will be evolved
A white ppt. of AgCl will form
CCl
4
will dissolve in AgNO
3
solution
Nothing will happen
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Question # 16
Natural fertilizer provides potassium in the form of K
2
O (potash)
Choose an answer
1.5 kg
3 kg
4.5 kg
6.5 kg
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