Civil Engineering Mcqs

If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is_________________?

(A)  50 mg/l

(B)  100 mg/l

(C)  150 mg/l

(D)  250 mg/l

Submitted By :Ali Uppal

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