Question

Biochemical oxygen demand is used to examine the pollution of

Answer 1

Pollution of rivers is a serious issue now-a-days.

Biological Oxygen Demand ( BOD) is a measure to examine the pollution of rivers ( or a water body).

It is the amount of oxygen dissolved in a given sample of water used by various organisms.

It serves as an excellent parameter to measure the quality of the water sample.

Answer 2

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Biochemical oxygen demand :

✴BOD is defined as the amount of dissolved oxygen needed by the aerobic organisms to break down organic material present in given sample of compound ...

✴ BOD of waste water effulents is used to indicate the short term impact on the oxygen level of the receiving water..

How BOD is used to examine the pollution :

✴If in the Sewage the dissolved oxygen is less it indicates more BOD..

✴Micro organisms involved in biodegradation of organic matter consume lot of oxygen,, so the dissolved oxygen decreased.. As a result BOD increases..

✴More BOD indicates more is the Pollution..

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