Chemistry Past Paper Questions

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Q 1061:What is the molecular formula for butane?
A
C4H8
B
C4H10
C
C4H12
D
C4H6
Rawalpindi, 2017
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Q 1062:When the magnitude of Kc is very large it indicates reaction mixture.
A
Consists of almost all products
B
Has almost all reactants
C
Has not gone to completion
D
Has negligible products
Rawalpindi, 2017
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Q 1063:Which disease causes severe diarrhea and can be fatal?
A
Jaundice
B
Chlorea
C
Typhoid
D
Dysentery
Rawalpindi, 2017
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Q 1064:Which gas protects the earth's surface from ultravoilet radiations?
A
CO2
B
CO
C
N2
D
O3
Rawalpindi, 2017
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Q 1065:Which of the following hydrocarbon molecules would have no effect on an aqueous solution of bromine?
A
CH4
B
C10H20
C
C2H4
D
C2H2
Rawalpindi, 2017
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Q 1066:Which one of the following ions does not cause hardness in water?
A
Ca+2
B
Mg+2
C
SO4-2
D
Na+
Rawalpindi, 2017
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Q 1067:Tyndall effect is shown by
A
Milk
B
Paints
C
Milk of Magnesia
D
None of these
Rawalpindi, 2017
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Q 1068:Which of the following is a liquid in solid solution?
A
fog
B
salt solution
C
butter
D
dust particles
Rawalpindi, 2017
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Q 1069:Which one of the following halogens has highest electronegativity?
A
Fluorine
B
Chlorine
C
Bromine
D
Iodine
Rawalpindi, 2017
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Q 1070:Which element is found in most abundance in the earth's crust?
A
Sodium
B
Nitrogen
C
Carbon
D
Oxygen
Rawalpindi, 2017
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Total MCQs: 1548Page 107 of 155
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