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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
In the troposphere (lowest layer), the temperature decreases form 17°C to;
Choose an answer
-58°C
-93°C
-61°C
-49°C
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Question # 2
Ozone depletion was first noticed is.
Choose an answer
1970's
1980's
1990's
1960's
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Question # 3
Which one of the following is not an air pollutants?
Choose an answer
Nitrogen
Carbon dioxide
Nitrogen oxide
Ozone
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Question # 4
Which one of the following gas has greater retaining capacity?
Choose an answer
O
2
N
2
CO
CO
2
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Question # 5
Cause of global warming is:
Choose an answer
CO
2
gas
SO
2
gas
NO
2
gas
O
2
gas
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Question # 6
Which pollutant is responsible for changing weather?
Choose an answer
Air pollutant
Water pollutant
Soil pollutant
All of them
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Question # 7
Ozone is beneficial for us as it absorbs.....................
Choose an answer
Infrared Radiations
Ultraviolet radiations
Chlorofluorocarbons
Air pollutants
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Question # 8
The gas used by animals to perform respiration.
Choose an answer
O
2
N
2
SO
2
Cl
2
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Question # 9
The process by which atmospheric nitrogen is turned into nitrates in the soil is called.
Choose an answer
Nitration
Fixing
Oxidation
Reduction
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Question # 10
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 # 11
Our planet earth consists of ____________ natural Spheres.
Choose an answer
1
4
6
8
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Question # 12
Incinerator reduces solid waste into .
Choose an answer
Ash
Flue gas
Heat
All of them
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Question # 13
Which gas protects the Earth's surface from ultraviolet radiations?
Choose an answer
CO
2
CO
N
2
O
3
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