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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
99% of atmosphere consists of .
Choose an answer
N
2
and H
2
N
2
and O
2
N
2
and CO
2
O
2
and CO
2
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Question # 2
Building are being damaged by acid rain because it attacks.
Choose an answer
Calcium sulphate
Calcium nitrate
Calcium carbonate
Calcium oxalate
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Question # 3
Which gas saves the surface of earth from ultra violet radiation?
Choose an answer
CO
2
CO
N
2
O
3
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Question # 4
High concentration of which metal clogs the fish gills.
Choose an answer
Zinc
Aluminium
Sodium
Copper
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Question # 5
Just above the Earth's surface is
Choose an answer
Mesosphere
Stratosphere
Theremosphere
Troposphere
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Question # 6
The percentage of SO
2
released by the combustion of coal and petroleum product.
Choose an answer
40%
60%
70%
80%
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Question # 7
Infrared radiations emitted by the Earth are absorbed by.
Choose an answer
CO
2
and H
2
O
N
2
and O
2
CO
2
and N
2
O
2
and CO
2
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Question # 8
Infrared radiation emitted by the earth are absorbed by?
Choose an answer
CO
2
,H
2
O
N
2
,O
2
CO
2
,N
2
O
2
,CO
2
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Question # 9
The green house effect is proportional to the amount of which gas in air.
Choose an answer
CO
2
O
2
N
2
All of them
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Question # 10
Forest fires and burning of wood emit.
Choose an answer
CO
2
NO
2
SO
2
Cl
2
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Question # 11
Ozone depletion was first noticed is.
Choose an answer
1970's
1980's
1990's
1960's
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Question # 12
Ozone is beneficial for us as it absorbs.....................
Choose an answer
Infrared Radiations
Ultraviolet radiations
Chlorofluorocarbons
Air pollutants
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Question # 13
Effects of ozone depletion are following except the one.
Choose an answer
Increases infectious diseases
Increases crops production
Can cause skin cancer
Can cause climatic changes.
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