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Definition of BOD

As the organi...

Question

As the organic matter increases in a water body, the BOD

A

Increases

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B

Decreases

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C

Remains unchanged

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D

Not a parameter

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Solution

The correct option is D Increases
BOD is Biological Oxygen Demand. It is the amount of oxygen required by microbes to break down the organic matter present in a certain volume of a sample of water.
In polluted water, BOD is high as it contains a large number of organisms.
High BOD values in the water of a river mean that the water is highly polluted.
Thus, the correct answer is option A.

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Q. Read the following statements (A-D) related to Biochemical Oxygen Demand (BOD) and identify the correct option stating true (T) and false (F).

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