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Question

The main cause of water pollution is

A
Soap
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B
Industrial effluents
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C
Smoke
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D
Ammonia
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Solution

The correct option is B Industrial effluents
The main causes of water pollution are municipal waste water, industrial waste water, surface run-off and oil spills. Hot Industrial effluents when directly discharged into water bodies cause both thermal and chemical pollution. Industrial waste water contains a variety of organic and inorganic residues, which are deadly pollutants.

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