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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
Almost all air crafts fly in which reion?
Choose an answer
Troposphere
Stratosphere
Mesosphere
Thermosphere
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Question # 2
Ozone layer is not found is
Choose an answer
Upper stratosphere
Mid stratosphere
Lower stratosphere
All of them
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Question # 3
Ozone is beneficial for us as it
Choose an answer
Absorb infrared radiation.
Absorb Ultraviolet radiations.
Absorb Chlorofluorocarbons
Absorb Air pollulant
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Question # 4
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 # 5
The gas used by animals to perform respiration.
Choose an answer
O
2
N
2
SO
2
Cl
2
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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
How much amount of sunlight reaches up to earth and absorbed:
Choose an answer
26%
32%
50%
18%
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Question # 8
Ozone has a smell
Choose an answer
Bitter
Rotten egg
Sweat
None of them
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Question # 9
The recombination of O and O
2
in mid stratosphere is an
Choose an answer
Exothermic reaction
Endothermic reaction
Heat absorbing process
None of these
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Question # 10
The waste products driven out because of the combustion of fossil fuels.
Choose an answer
Primary pollutant
Secondary pollutant
Tertiary pollutant.
None of them
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Question # 11
The region in which ozone layere depletes is called.
Choose an answer
Ozone hole
Black hole
Both of them
None of them
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Question # 12
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 # 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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