Chemistry Past Paper Questions

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Q 101:Coal gas is mixture of
A
CO, CH4, CO2
B
CO, H2, CO2
C
CO, CH4
D
CO, CH4, H2
Gujranwala, 2019
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Q 102:Deficiency of vitamin-D causes _________ disease.
A
Night blindness
B
Rickets
C
Eye inflammation
D
Hepatitis
Gujranwala, 2019
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Q 103:For a reaction between PCl3 and Cl2 to form PCl5 the units of Kc are:
A
mol dm-3
B
mol-1 dm-3
C
mol-1 dm3
D
mol dm3
Gujranwala, 2019
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Q 104:General formula of alkane is:
A
CnH2n+2
B
CnH2n-2
C
CnH2n+1
D
CnH2n
Gujranwala, 2019
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Q 105:How many numbers of moles are equivalent to 8 grams of CO2 ?
A
0.15 g
B
0.18 g
C
0.21 g
D
0.24 g
Gujranwala, 2019
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Q 106:How many times are the liquids denser than gases?
A
10 times
B
100 times
C
1000 times
D
10000 times
Gujranwala, 2019
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Q 107:If 10 grams of sugar are dissolved in 100 grams of water, it is called.
A
v/v%
B
v/m%
C
m/v%
D
m/m%
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Q 108:In a period which of the following, decreases from left to right?
A
Atomic Radius
B
Ionization Energy
C
Electron Affinity
D
Electronegativity
Gujranwala, 2019
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Q 109:In long form of periodic table the horizontal lines are called.
A
groups
B
blocks
C
periods
D
triads
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Q 110:Empirical formula of Benzene is:
A
CH
B
C2H2
C
HO
D
CH2O
Gujranwala, 2019
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Total MCQs: 1548Page 11 of 155
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