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Online Tests
Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers
Question # 1
What percentage of nitrogen and oxygen is in the atmosphere.
Choose an answer
69%
79%
9%
89%
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Question # 2
A strange bitter smell noticed near photo copier machine is of.
Choose an answer
H
2
S
SO
2
O
2
O
3
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Question # 3
Which gas is responsible in warming the atmosphere?
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Nitrogen
Hydrogen
Helium
Fluorine
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Question # 4
Depending upon temperature variation, atmosphere ins divided into how many regions?
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1
2
3
4
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Question # 5
The formula of ozone is.
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O
2
O
3
O
CO
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Question # 6
___________ is not green house effect.
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Increase of food chain
increase atmospheric pressure
Increase of sea level
Increase of flood risks
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Question # 7
Which is the major effect of global warming?
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Increase in temperature.
Rise in sea level
Melting of glaciers
All of them
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Question # 8
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 # 9
On which base atmosphere is divided into four regions?
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Change in pressure
Change in rediation
Change in temperature
Change in volume
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Question # 10
The region of ozone decomposition in stratosphere is.
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20 km
30 km
40 km
50 km
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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
A pollutant is a waste material that pollutes.
Choose an answer
Air
Water
Soil
All of them
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Question # 13
Infrared radiation emitted by the earth are absorbed by?
Choose an answer
CO
2
,H
2
O
N
2
,O
2
CO
2
,N
2
O
2
,CO
2
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