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Biochemical oxygen demand (BOD) is defin...

Biochemical oxygen demand (BOD) is defined as ............ in ppm of `O_2`.

A

Required to sustain life

B

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water

C

The amount of oxygen required by anaerobic bacteria to break down the inorganic matter present in a certain volume of a sample of water

D

Required photochemical reaction to degrade waste

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The correct Answer is:
B
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