What is BOD ?

Options

A. The amount of `O_(2)` utilised by organisms in water
B. The amount of `O_(2)` utilised by microorganisms for decomposition
C. The total amount of `O_(2)` present in water
D. All of the above

Answer

B

Explanation

Biological Oxygen Demand (BOD) is the amount of `O_(2)` required for biological oxidation of organic matter present in polluted water by microorganisms in any unit volume of water.