Q24
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
AnswerD.
None of these
Answer: Option C
Solution
Answer: Option C
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