Chemistry Past Paper Questions

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Q 21:Temporary Hardness is because of:
A
CaCO₃
B
MgCO₃
C
MgSO₄
D
Ca(HCO₃)₂
Bahawalpur, 2019
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Q 22:Testeless Carbohydrate is:
A
Starch
B
Glucose
C
Fructose
D
Sucrose
Bahawalpur, 2019
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Q 23:The ability of Carbon Atoms to form chain is called:
A
Isomerism
B
Resonance
C
Catenation
D
Condensation
Bahawalpur, 2019
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Q 24:The other name of Alkanes is:
A
Paraffin
B
Olefins
C
Halogens
D
Acetylene
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Q 25:The temperature at which water has maximum Density is:
A
OᵒC
B
4ᵒC
C
100ᵒC
D
10ᵒC
Bahawalpur, 2019
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Q 26:The Unit of Molar Concentration are:
A
mol dm-3
B
mol dm-2
C
mol dm-1
D
mol dm3
Bahawalpur, 2019
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Q 27:The value of Planck's Constant is:
A
6.63x10-33 js
B
6.63x10-34 Js
C
6.63x10-35 Js
D
6.63x10-36 Js
Bahawalpur, 2019
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Q 28:The oxidation Number of chromium in K2Cr2O7 is:
A
+2
B
+6
C
+14
D
+7
Bahawalpur, 2019
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Q 29:The Oxidation Number of Nitrogen in NHO3 is:
A
+5
B
+6
C
+7
D
+8
Bahawalpur, 2019
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Q 30:The example of Diatomic Molecule is:
A
HCl
B
H2O
C
NO2
D
CO2
Bahawalpur, 2019
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Total MCQs: 1548Page 3 of 155
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