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Q.

The minimum value of BOD that indicates high polution and harmness is

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a

20ppm

b

0.2ppm

c

200ppm

d

2ppm

answer is D.

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Detailed Solution

Given data: It is given to find the minimum value of BOD that indicates high pollution and harmness

Concept Used:  BOD

Detailed Solution: Biochemical oxygen demand represents the amount of oxygen consumed by bacteria or other microorganisms which decomposes the organic matter under the persence of oxygen (aerobic condition).

Clean water has the BOD value of less than 5ppm and highly polluted would has BOD more than 17ppm .

Hence the correct option is (D).

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