Chemistry Past Paper Questions

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Q 661:Conjugate base of H2S04 (sulphuric acid) is
A
SO4-2
B
SO4-4
C
SO4
D
HSO4-
Rawalpindi, 2018
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Q 662:For a reaction between PCl3 and CI2 to form PCI5, the unit of Kc is:
A
mol dm-3
B
mol-1 dm-3
C
mol-1 dm3
D
mol dm3
Rawalpindi, 2018
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Q 663:if Qc < Kc reaction proceeds:
A
forward
B
reverse
C
equilibrium
D
sides
Rawalpindi, 2018
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Q 664:Gain of electron is called:
A
Reduction
B
oxidation
C
Redox
D
Electrolysis
Rawalpindi, 2018
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Q 665:Gram atomic mass of hydrogen is:
A
1.08 g
B
1.008 amu
C
2.016 g
D
1.008 g
Rawalpindi, 2018
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Q 666:How many electrons are involved in the formation of double covalent bond?
A
3
B
1
C
2
D
4
Rawalpindi, 2018
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Q 667:Density of water is:
A
2 gcm-3
B
-2 gcm-3
C
1 gcm-3
D
-1 gcm-3
Rawalpindi, 2018
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Q 668:Example of non-electrolyte is:
A
CH3COOH
B
Sugar
C
NaOH
D
NaCl
Rawalpindi, 2018
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Q 669:Brass is a solid solution of:
A
Zn + Cu
B
Zn + Au
C
Zn + fe
D
Zn + Ag
Rawalpindi, 2018
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Q 670:Charge on atom is:
A
Positive
B
Negative
C
Neutral
D
-2
Rawalpindi, 2018
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Total MCQs: 1548Page 67 of 155
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