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Water samples with BOD values of 4 ...

Water samples with BOD values of 4 ppm and 18 ppm, respectively are:

A

Highly polluted and Clean

B

Clean and Clean

C

Highly polluted and Highly polluted

D

Clean and Highly polluted

Text Solution

Verified by Experts

The correct Answer is:
D
Clean water. would have a BOD value of less than 5 ppm where as highly polluted water (river, lake, ponds etc.) could have a BOD value of 17 ppm or more.
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