Chemistry Past Paper Questions

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Q 801:For the given reaction 2A+ B ⇌ 3C the equilibrium constant is:
A
[C]3/[A]2[B]
B
[3C]/[2A][B]
C
[A]2[B]/[C]3
D
[2A][B]/[3C]
Bahawalpur, 2017
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Q 802:Formula of urea is:
A
NH2CONH2
B
NH2CONH4
C
NH2COONH2
D
Nh2COONH4
Bahawalpur, 2017
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Q 803:Depending on temperature variation, atmosphere is divided into how many regions:
A
1
B
2
C
3
D
4
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Q 804:Deutrium is used to make:
A
Light water
B
Heavy water
C
Soft water
D
Hard water
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Q 805:During the formation of water from hydrogen and oxygen, which of the following does not occur.
A
Hydrogen has oxidized
B
Oxygen has reduced
C
Oxygen gains electrons
D
Hydrogen behaves as oxidizing agent
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Q 806:Gases are the lightest form of matter and their densities are expressed in terms of:
A
mgcm-3
B
gcm-3
C
gdm-3
D
kgdm-3
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Q 807:How many number of moles are equivalent to 8 grams of CO2?
A
0.15
B
0.18
C
0.21
D
0.24
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Q 808:How many times liquids are denser than gases.
A
100 Times
B
1000 times
C
10000 times
D
100000 times
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Q 809:Identify the compound which is not soluble in water.
A
C6H6
B
NaCl
C
KBr
D
MgCl2
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Q 810:Concentration is the ratio of:
A
Solute to Solvent
B
Solute to solution
C
Both a and b
D
Solvent to solution
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Total MCQs: 1548Page 81 of 155
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