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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 group of gases that maintains temperature of atmosphere is.
Choose an answer
Carbon dioxide and water vapours
Nitrogen and carbon dioxide
Thermosphere
Troposphere
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Question # 3
A pollutant is a waste material that pollutes.
Choose an answer
Air
Water
Soil
All of them
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Question # 4
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 # 5
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 # 6
At the height 880120 km from earth's surface is.
Choose an answer
Troposphere
Mesosphere
Stratosphere
Thermosphere
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Question # 7
The envelope of different gases around the earth is called.
Choose an answer
Atmosphere
Brosphere
Lithosphere
Hydrosphere
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Question # 8
Which of the following is a poisonous gas.
Choose an answer
Oxygen
Ozone
Nitrogen
Carbon dioxide
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Question # 9
Percentage of nitrogen in atmosphere is:
Choose an answer
20.94%
78.09%
0.93%
0.03%
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Question # 10
Normal rain water is:
Choose an answer
weakly acidic
strongly acidic
weakly basic
strongly basic
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Question # 11
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 # 12
Which gas is in involved in ozone depletion?
Choose an answer
Nitrogen
CFC's
Chlorine
All of them
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Question # 13
Which metal present in acid rain affect the aquatic life by clogging fish gills?
Choose an answer
Lead
Chromium
Aluminium
Mercury
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