It is possible to estimate the amount of organic matter in sewage water by measuring biochemical oxygen demand. Can you explain how ?

The amount of organic matter in sewage water can be estimated by

Biochemical oxygen demand measures:

Consider the following statements with respect to pollution. A. To control air pollution problems, by the end of 2002 all the buses of Delhi were converted to run on unrelated petrol B. Electrostatic precipitator can remove over 99% particulated matter present in the exhaust from a thermal power plant. C. It is possible to estimate the amount of organic matterin sewage water by measuring BOD. Of the above statements:

Biochemicals oxygen demands in a river water

Measuring Biochemical Oxygen Demand (BOD) is a method used for

Measuring Biochemical Oxygen Demand (BOD) is a method used for:

What do you mean by Biochemical Oxygen Demand (BOD)?

Clean water should have biochemical oxygen demand (BOD) up to: