Chemistry Past Paper Questions

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Q 1041:Acetic acid is used for
A
Flavoring food
B
Making explosives
C
Etching Designs
D
Cleaning Metals
Rawalpindi, 2017
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Q 1042:Conteration of the copper ore is carried out by
A
Calcination
B
Roasting
C
Forth flotation
D
Distillation
Rawalpindi, 2017
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Q 1043:For the given reaction, units of Kc are H2(g) +I2(g) ⇌ 2HI(g)
A
mol dm-3
B
mol-1 dm3
C
no units
D
mol-1 dm-3
Rawalpindi, 2017
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Q 1044:Just above the earth surface is
A
Mesosphere
B
Stratosphere
C
Thermosphere
D
Troposphere
Rawalpindi, 2017
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Q 1045:Night blindness is caused due to the deficiency of which vitamin?
A
Vitamin A
B
Vitamin E
C
Vitamin C
D
Vitamin D
Rawalpindi, 2017
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Q 1046:Main component of natural gas is.
A
Methane
B
Propane
C
Butane
D
Propene
Rawalpindi, 2017
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Q 1047:Mendeleev's periodic table was based on
A
Atomic number
B
Number of shells
C
Orbits
D
Atomic mass
Rawalpindi, 2017
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Q 1048:Long form of periodic table was based on
A
Atomic number
B
Number of shells
C
Orbits
D
Atomic mass
Rawalpindi, 2017
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Q 1049:How many electrons are involved in the formation of single covalent bond?
A
6
B
4
C
2
D
8
Rawalpindi, 2017
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Q 1050:How many groups are there in long form of periodic table?
A
2
B
6
C
8
D
18
Rawalpindi, 2017
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Total MCQs: 1548Page 105 of 155
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