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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Dehydration means removal of.
Choose an answer
Water
Halogen
Hydrogen
All above.
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Question # 2
Triglycerides are fatty acids.
Choose an answer
Unsaturated
Saturated
Both of them
None of them
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Question # 3
Concentration is a separating technique in which mineral is separated from.
Choose an answer
Gangue
Silicates
Aluminates
All
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Question # 4
Which of following dehydration of alcohols take place:
Choose an answer
NaOH
KOH
H
2
SO
4
HCl
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Question # 5
Which of the following statement s is not true about fossil fuels?
Choose an answer
they all contain carbon
They are renewable
they produce pollutants when burnt
they cause acid rain
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Question # 6
Which gas creates suffocation and causes death?
Choose an answer
CO
CO
2
SO
3
SO
2
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Question # 7
The bond in the product of lewis acid base reaction.
Choose an answer
Ionic
Covalent
Metallic
Coordinate covalent
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Question # 8
At which temperature o water shows mxamimum density.
Choose an answer
0
o
C
100
o
C
4
o
C
-4
o
C
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Question # 9
Alkanes are produced in large amounts by cracking of
Choose an answer
Natural gas
Petroleum
Benzene
Xylol
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Question # 10
A group of gases that maintains temperature of atmosphere is.
Choose an answer
Carbon dioxide and water vapours
Nitrogen and carbon dioxide
Thermosphere
Troposphere
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Question # 11
Formula of Methyl alcohol
Choose an answer
CH
5
-OH
CH
3
-CH
2
-OH
All of them
None of these
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Question # 12
The % age of nitrogen and oxygen in our atmosphere is:
Choose an answer
80
90
95
99
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Question # 13
Which is not an air pollutant?
Choose an answer
CO
2
CO
SO
2
NH
3
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