Q. Biochemical Oxygen Demand (BOD) is a measure of
A) industrial wastes poured into water bodies
B) Extent to which water is polluted with organic compound
C) amount of carbon monoxide inseparably combined with haemoglobin
D) amount of oxygen needed by green plants during night
Explanation
Biochemical Oxygen Demand (BOD) is a measure of pollution by organic matter present in a sample of water.BOD is higher in polluted sewage water and is connected with both microbes and organic matter. More the organic pollution, specially sewage, more would be the BOD of water.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.