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 Engineering Mcqs

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

Submitted By :Ali Uppal

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