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10th Class Chemistry Chapter 12 Hydrocarbons English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Alkanes do not react in
Choose an answer
Diffused sunlight
Dark
Bright sunlight
None of these
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Question # 2
Which is present 85% in natural gas?
Choose an answer
Ethane
Propane
Methane
Butane
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Question # 3
General formula of alkenes.
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C
n
H
2n-2
C
n
H
2n
C
n
H
2n+2
C
n
H
2n-1
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Question # 4
Carbon Tetra chloride is used in .
Choose an answer
Fertilizer
Dry cleaning
Metallurgy
Anesthesia
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Question # 5
If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one.
Choose an answer
It will be saturated hydrocarbon
It will hav 8 hydrogen atoms
Its name will be n-butane.
It will be least reactive.
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Question # 6
Which hydrocarbon has no effect on an aqueous solution of bromine.
Choose an answer
CH
4
C
10
H
20
C
2
H
2
C
2
H
4
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Question # 7
Oxidation of alkenes produce.
Choose an answer
Glyoxal
Glycol
Oxalic acid
Formic acid
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Question # 8
Carbon black is used in the manufacture of.
Choose an answer
Dry cleaning
Shoe polishes.
Fertilizer
None of these
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Question # 9
The end product of oxidation of acetylene is .
Choose an answer
Oxalic acid
Glyoxal
Glycol
None of these
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Question # 10
Chemical formula of chloroform is :
Choose an answer
CH
2
Cl
2
CH
3
Cl
CHCl
3
CCl
4
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Question # 11
Amont the followign substitution reaction is characteristics of.
Choose an answer
Alkanes
Alkenes
Alkynes
None of these
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Question # 12
Which of one of the following is used as as fumigant:
Choose an answer
Ethyl alcohol
ethylene oxide
ethylene glycol
diethyl ether
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Question # 13
Dichloromethane reacts with halogens in the presence of diffused sun light and produces
Choose an answer
Carbon tetrachloride
Chloroform
Chloromethane
No reaction
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