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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____________________?
Civil Engineeringmedium
A200 ppm
B225 ppm
250 ppm
DNone of these
Correct Answer: C. 250 ppm
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