Multiple choice

If the BOD percentage is high, then the

  1. river is polluted

  2. river is not polluted

  3. river is dry

  4. None of the above

  5. -
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A Correct answer
Explanation

BOD is a measure of the amount of oxygen that is required by the bacteria to degrade the organic components present in water. It is often used as a degree of organic pollution of water.

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