Home JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-6 Biochemical oxygen demand (BOD) is defined a…
JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-6 Single Correct MCQ
Published on: August 13, 2026

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

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

Biochemical oxygen demand (BOD) is the amount of dissolved oxygen used by microorganisms in the biological process of metabolizing organic matter in water.

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