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If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is_________________?
Civil Engineeringmedium
A100 mg/l
B200 mg/l
C300 mg/l
400 mg/l
Correct Answer: D. 400 mg/l
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