Biochemical oxygen demand is a measure of organic material present in water- BOD value less than 5ppm indicates a water sample to beA- Rich in dissolved oxygen-B- Poor in dissolved oxygen-C- Highly polluted-D- Not suitable for aquatic life-

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Water Pollution

Biochemical o...

Question

Biochemical oxygen demand is a measure of organic material present in water. BOD value less than 5ppm indicates a water sample to be ___________.

Rich in dissolved oxygen.

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Poor in dissolved oxygen.

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Highly polluted.

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Not suitable for aquatic life.

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Solution

The correct option is A
Rich in dissolved oxygen.

Biochemical oxygen demand is a measure of organic material present in water. BOD value less than 5ppm indicates a water sample to be rich in dissolved oxygen. For fresh water, the value of BOD is less than 5ppm, while for polluted water value of BOD is 17 ppm or more than 17ppm.

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Q32 Consider the following statements,

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