Environmental Chemistry CDS Questions

CDS Chemistry

Environmental Chemistry MCQ Questions


7.
In the process of environmental pollution, pollutants originate from a source and are transported by _______________ by human beings.
A.
Solid , Liquid or Gas
B.
Air , Water or Soil
C.
Plants, Animals and Human Beings
D.
Birds , Trees or Human Beings
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ANSWER :
B. Air , Water or Soil
8.
Who surrounds the earth is not of the same thickness at all heights?
A.
Atmosphere
B.
Exosphere
C.
Mesosphere
D.
Thermosphere
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ANSWER :
A. Atmosphere
9.
Pollutants can be solid, liquid or gaseous substances in greater concentration than in
A.
Opposite Abundance
B.
Natural Abundance
C.
Gas
D.
Air
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ANSWER :
B. Natural Abundance
10.
Which of the following present in the stratosphere prevents 99.5 per cent of the sun’s harmful Ultraviolet radiations from reaching the earth’s surface?
A.
Oxygen
B.
Exosphere
C.
Hydrogen
D.
Ozone
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ANSWER :
D. Ozone
11.
Troposphere is a turbulent dusty zone containing air much ____________ and clouds.
A.
Gas Vapour
B.
Water and Soil
C.
Air Vapour
D.
Water Vapour
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ANSWER :
D. Water Vapour
12.
pollutants cannot be degraded by natural processes and are harmful to
A.
Plants and Animals
B.
Living Things
C.
Non Living Objects
D.
Living Organisms
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ANSWER :
D. Living Organisms