Chemistry Past Paper Questions

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Q 1151:The reaction will attain the equilibrium if :
A
Qc > Kc
B
Qc < Kc
C
Qc = Kc
D
Qc = 0
Sargodha, 2017
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Q 1152:The sum of pH and pOH of any solution at 25oC is always:
A
4
B
8
C
10
D
14
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Q 1153:Which acid is used for food preservation?
A
Sulphuric acid
B
Nitric acid
C
Hydrochloric acid
D
Benzoic acid
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Q 1154:Which gas protects the Earth's surface from ultraviolet radiations?
A
CO2
B
CO
C
N2
D
O3
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Q 1155:Which is universal solvent?
A
Benzene
B
Alcohol
C
HCl
D
Water
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Q 1156:Total groups in Modern periodic table are:
A
18
B
7
C
5
D
10
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Q 1157:Transition elements are:
A
All gases
B
All metals
C
all non metals
D
All metalloids
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Q 1158:Tyndall effect is shown by:
A
Sugar Solution
B
Paints
C
Jelly
D
Chalk Solution
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Q 1159:When a saturated solution is diluted it turns into:
A
Super saturated solution
B
Saturated solution
C
A concentrated solution
D
Unsaturated solution
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Q 1160:The oxidation number of chromium in K2Cr2O7 is:
A
+14
B
+7
C
+6
D
+2
Sargodha, 2017
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Total MCQs: 1548Page 116 of 155
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