Chemistry Past Paper Questions

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Q 691:Units of Kc in the reaction H2(g) + I2(g) ⇌ 2HI(g) are:
A
mol dm-3
B
mol-1 dm-3
C
mol2 dm-3
D
No units
Rawalpindi, 2018
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Q 692:What is added to remove permanent hardness?
A
Soda lime
B
lime wter
C
Quick lime
D
Sodium zeolite
Rawalpindi, 2018
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Q 693:Which disease causes bone and tooth damage?
A
Fluorosis
B
Hepatitis
C
Chlorea
D
Jaundice
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Q 694:Which gas is called green house gas?
A
CO2
B
CO
C
N2
D
O3
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Q 695:Which is conjugate acid of HPO42-
A
PO43-
B
H2SO4
C
H3PO4
D
H2PO4-
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Q 696:Which is lavoisier acid?
A
HCl
B
H2SO4
C
CO2
D
NH3
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Q 697:Which one of the following is a fat soluble vitamin?
A
A
B
E
C
K
D
All
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Q 698:Which one of the following is a saturated hydrocarbon?
A
C2H4
B
C3H6
C
C4H8
D
C5H12
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Q 699:Which one of the following is amorphous solid?
A
Diamond
B
Sodium chloride
C
Potassium chloride
D
Plastic
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Q 700:When uranium-235 breaks up, it produces:
A
Neutron
B
Electron
C
Protons
D
None
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Total MCQs: 1548Page 70 of 155
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