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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
Major portion of ozone layer is foun in.
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Troposphere
Stratosphere
Mesosphere
Thermosphere
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Question # 2
PAN stands for
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Poly aniline nitrate
Proxy acetyl nitrate
Poly acetyl nitrite
Proxy acetyl nitrite
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Question # 3
Which gas is not present in atmosphere?
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Nitrogen
Oxygen
Helium
Carbon dioxide
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Question # 4
Ozone is beneficial for us as it
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Absorb infrared radiation.
Absorb Ultraviolet radiations.
Absorb Chlorofluorocarbons
Absorb Air pollulant
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Question # 5
Global warming causes rising of the sea level. The cause of global warming is.
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CO
2
gas.
SO
2
gas.
NO
2
gases.
O
3
gas.
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Question # 6
Atmosphere has regions.
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One
Two
Three
Four
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Question # 7
Carbon monoxide is harmful to use because it:
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Paralyses lungs
Damages lungs
Reduce oxygen carrying ability of hemoglobin
Make the blood coagulate
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Question # 8
Iron and steel structure are damaged by.
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Carbon monoxide
Sulphur dioxide
Methane
Carbon dioxide
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Question # 9
Which gas is in involved in ozone depletion?
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Nitrogen
CFC's
Chlorine
All of them
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Question # 10
The pH of acid rain.
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2
3
4
5
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Question # 11
About 99% of atmospheric mass lies in.
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35 km
30 km
15 km
16 km
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Question # 12
Which one of these pollutants are not found in car exhaust fumes?
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CO
2
O
3
NO
2
SO
2
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