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Online Tests
Chemistry 9th Class English Medium Unit 10 Online Test MCQs With Answers
Question # 1
Catalytic converters convert.
Choose an answer
CO to CO2
NO to N2
CO2 to CO
N2 to NO2
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Question # 2
Which is not a poisonous gas.
Choose an answer
CO
Ozone
Carbon di oxide
All of these
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Question # 3
How many % of marine mammals are at the risk of chokig on plastic.
Choose an answer
78%
21%
0.03%
99%
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Question # 4
Increased concentration of CO2 in air results.
Choose an answer
Temperature remain same
Increasing temperature
Decreasing temperature
None of the above
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Question # 5
Which substance remains unafaffected in the catalytic conerer fixed int he exhaust of the atutomobiles.
Choose an answer
NO2
NO
CO2
CO
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Question # 6
Whcih gas is emitted due to volcanic eruption.
Choose an answer
SO2
N2
CO2
Both a and b
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Question # 7
Which one of these pollutants are not found in car exhaust fumes.
Choose an answer
NO2
SO2
CO
O3
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Question # 8
fossil fuel means.
Choose an answer
Coal
Petroluem
Natural gas
All of these
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Question # 9
People of which age groups are most affected by the air pollution .
Choose an answer
Children
Young Adults
Cancer patient
Both children and aged people
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Question # 10
% age of oxygen gas by volume in dry air is
Choose an answer
21%
90%
40%
30%
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Question # 11
Indicate the source of sulphur which is responsible for the presennce of oxides of sulphur in the atomospher.
Choose an answer
Combustion of fossil fuels
Decomposition of vegetation
Waste gases from digestionof animals
Photochemical smog
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Question # 12
Global warming causes rising of the sea level. The cause of global warming is.
Choose an answer
SO2 gas
O3 gas
NO3 gas
CO2 gas
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Question # 13
How many tons of ice have lost since 1990?
Choose an answer
28 trillion
10 trillion
18 trillion
8 trillion
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