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Biochemical Oxygen Demand (BOD) is the a...

Biochemical Oxygen Demand (BOD) is the amount of oxygen required (in ppm):

A

for the photochemical breakdown of waste present in `1m^3` volume of a water body .

B

for sustaining life in a water body.

C

by bacteria to break - down organic waste in a certain volume of a water sample .

D

by anaerobic bacteria to breakdown inorganic waste present in a water body .

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The correct Answer is:
C
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