High value of BOD (Biochemical Oxygen Demand) indicates that:

consumption of organic matter in the water is higher by the microbes

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water is pure

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water is highly polluted

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water is less polluted

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Solution

The correct option is C
water is highly polluted

Biological Oxygen Demand is the oxygen in milligrams required for five days in one litre of waterat 20⁰C for microorganisms to metabolise organic waste. High value of BOD (Biochemical Oxygen Demand) indicates that water is highly polluted.

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