Chemistry Past Paper Questions

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Q 121:Reaction which have comparable amount of reactants and products at equilibrium state have:
A
Very small Kc value
B
Very large Kc value
C
Moderate Kc value
D
Kc = 0
Gujranwala, 2019
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Q 122:Temporary hardness of water can be removed by adding.
A
Limestone
B
Washing sods
C
Slaked lime
D
NH3
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Q 123:The conjugate acid of HPO2-4 is:
A
H3PO4
B
H2PO2-4
C
H2PO-4
D
PO3-4
Gujranwala, 2019
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Q 124:The quantity of water fit for drinking on the earth is __________ %:
A
0.2
B
0.4
C
0.5
D
0.6
Gujranwala, 2019
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Q 125:The natural source of formic acid is:
A
Citrus fruits
B
Sour Milk
C
Stings of bees
D
Rancid butter
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Q 126:The number of electrons in valence shell of chlorine is:
A
1
B
6
C
7
D
8
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Q 127:The p-subshell consists of how many orbtials?
A
1
B
2
C
3
D
4
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Q 128:The elements of group 1 and group 2 are called:
A
s block
B
p block
C
d block
D
f block
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Q 129:The Halogen which exists as solid at room temperature:
A
chlorine
B
bromine
C
fluorine
D
Iodine
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Q 130:The maximum number of electrons that L-shell can accommodate is:
A
6
B
8
C
14
D
18
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Total MCQs: 1548Page 13 of 155
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