Q25
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
AnswerAnswer: Option D
Solution
Answer: Option D
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