If the depletion of oxygen is found to be 5 ppm...

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If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is

A. 50 ppm

B. 100 ppm

C. 150 ppm

D. 200 ppm

Answer: Option D

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