Water sample is reported to be highly polluted if BOD (Biological Oxyg – McqOptions

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1.	Water sample is reported to be highly polluted if BOD (Biological Oxygen Demand) value of sample becomes
A.	more than 17 ppm.
B.	equal to 10 ppm.
C.	equal to 5 ppm.
D.	less than 5 ppm.
Answer» B. equal to 10 ppm.

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