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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
About 99% atmosphere's lies within:
Choose an answer
30 kilometre
35 kilometre
15kilometre
11 kilometre
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Question # 2
A pollutant is a waste material that pollutes.
Choose an answer
Air
Water
Soil
All of them
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Question # 3
Global warming causes rising of the sea level. The cause of global warming is.
Choose an answer
CO
2
gas.
SO
2
gas.
NO
2
gases.
O
3
gas.
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Question # 4
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 # 5
Which gas acts as a glass wall of a green house?
Choose an answer
Oxygen
Carbon dioxides
sulphur dioxide
Hydrogen
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Question # 6
Carbon monoxide is harmful to us because.
Choose an answer
It paralyses the lungs.
It damages lungs tissues.
It reduces oxygen carrying ability of haemoglobin
It makes the blood coagulate.
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Question # 7
By the increase in the concentration of CO
2
in air.
Choose an answer
Decrease in heat energy
Increase in heat energy.
Heat energy remains same
None of them
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Question # 8
Which gas is in involved in ozone depletion?
Choose an answer
Nitrogen
CFC's
Chlorine
All of them
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Question # 9
Almost all air crafts fly in which reion?
Choose an answer
Troposphere
Stratosphere
Mesosphere
Thermosphere
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Question # 10
The stratosphere layer is at height above the earth's surface.
Choose an answer
0-12 km
12-50 km
50-85 km
65-120 km
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Question # 11
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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Question # 12
The pH of water containing CO
2
is
Choose an answer
4-6
5.6-6
6-7
7-8
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Question # 13
How many percentage of sunlight is absorbed by atmosphere gases.
Choose an answer
12%
18%
24%
30%
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