If 2 solution of a sewage sample is incubated for 5...

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If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is

A. 200 ppm

B. 225 ppm

C. 250 ppm

D. None of these

Answer: Option C

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