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10th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Global warming is because of.
Choose an answer
Absorption of infrared radiation emitted by earth surface.
Absorption of infrared radiation coming from sun.
Absorption of infrared Ultraviolet coming from the sun.
Emission of ultraviolet radiation from the earth's surface.
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Question # 2
General formula of alkynes is:
Choose an answer
C
n
H
n
C
n
H
2n
C
n
H
2n+2
C
n
H
2n-2
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Question # 3
Which one of the following diseases causes liver inflammation?
Choose an answer
Typhoid
Jaundice
Cholera
Hapatitis
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Question # 4
Which is the major effect of global warming?
Choose an answer
Increase in temperature.
Rise in sea level
Melting of glaciers
All of them
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Question # 5
Which disease is caused by polluted water.
Choose an answer
Cholera
Typhoid
Diarrhea
All of them
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Question # 6
Substitution reaction is the characteristics of.
Choose an answer
Alkanes
Alkenes
Alkynes
None of these
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Question # 7
In an irreversible reaction dynamic equilibrium:
Choose an answer
Never establishes
Established before the completion of reaction
Establishes after the completion of reaction
Establishes readily
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Question # 8
When NaHCO
3
is heated if forms:
Choose an answer
CO
2
Ca(OH)
2
CaCO
3
CaO
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Question # 9
Lewis acid-base concept have the following characteristics except:
Choose an answer
formation of an adduct
Formation of a co-ordinate covalent bound
Donation and acceptance of an electron pair
Donation and acceptance of a proton
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Question # 10
Which one contains triple covalent bond?
Choose an answer
Pentane
Ethylene
Acetylene
All
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Question # 11
The example of heterocyclic compound is.
Choose an answer
Benzene
Hexane
Cyclohexane
Pyridine
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Question # 12
Natural source of citric acid is:
Choose an answer
Rancid butter
Fats
Lemon
Sour milk
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Question # 13
Coal is the mixture of
Choose an answer
Hydrogen
Methane
Carbon monoxide
All
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