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Question

Biochemical Oxygen Demand (BOD) is a measure of

A
industrial wasters poured into water bodies
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B
extent to which water is polluted with organic compound
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C
amount of carbon monoxide inseparably combined with haemoglobin
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D
amount of oxygen needed by green plants during night
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Solution

The correct option is B extent to which water is polluted with organic compound
Biochemical Oxygen Demand (BOD) is a measure of the extent to which water is polluted with the organic compound. BOD is higher in polluted sewage water and is connected with both microbes and organic matter. More the organic pollution, especially sewage, more would be the BOD of water.

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