Question

Biological Oxygen Demand (BOD) is a measure of

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

Answer 1

The Correct Option is B

To measure water pollution, Biological Oxygen Demand or BOD test is done. In this test, amount of oxygen sufficient for degradation of waste organic matter by
microorganisms in a sample is measured. The more oxygen used up by the microorganism to degrade the organic matter in the sample, the greater the BOD would be