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  • The measured BOD values for four different water samples (A-D) are as follows: A= 3 ppm; B=18 ppm; C=21 ppm D=4 ppm. The water samples which can be called as highly polluted with organic wastes, ar

The measured BOD values for four different water samples (A-D) are as follows: A= 3 ppm; B=18 ppm; C=21 ppm D=4 ppm. The water samples which can be called as highly polluted with organic wastes, are

Option: 1

A and B


Option: 2

A and D


Option: 3

B and C


Option: 4

B and D


Answers (1)

best_answer

As we have learnt, 

Highly polluted water has a BOD of more than 17 ppm.

Thus, water samples B (18 ppm) and C (21 ppm) are highly polluted.

Hence, the correct answer is Option (3)

Posted by

HARSH KANKARIA

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