In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial d

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Question
In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial dissolved oxygen (D.O) content of the diluted sample is 7.8 mg/l. After 5 days of incubation at 20�C, the D.O. content of the sample is reduced to 4.4 mg/l. The BOD of the waste water is :
Options
A. 196 mg/l
B. 200 m/l
C. 204 mg/l
D. 208 mg/l

Correct Answer

200 m/l