JEE Main 9 Jan 2020 Shift 2 Solved Paper

Section: Chemistry

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Question : 32 of 75

Marks: +1, -0

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

[9 Jan 2020 Shift 2]

by anaerobic bacteria to breakdowninorganic waste present in a water body.
for the photochemical breakdown of waste present in 1 m3 volume of a water body.
by bacteria to break-down organic waste ina certain volume of a water sample.
for sustaining life in a water body.

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