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Question

Spraying of DDT on crops produces pollution of

A
Soil and water only
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B
Air and soil only
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C
Air, soil and water
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D
Air and water only
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Solution

The correct option is C Air, soil and water
Large amounts of DDT are released into the air and on soil or water, when sprayed on crops and forests to control mosquitoes and other insects. Also, DDT may enter the atmosphere when it is evaporated from contaminated water and soil. DDT in the air may then be deposited on land or surface waters. This cycle of evaporation and deposition may be repeated many times. As a result, DDT causes an undesirable change in the atmosphere.


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