If the BOD3 of a waste water sample is 75 mg/l and reaction rate constant k (base e) is 0.345 per day, the amount of BOD remaining in the given sample after 10 days is

If the BOD3 of a waste water sample is 75 mg/l and reaction rate const

1.	If the BOD3 of a waste water sample is 75 mg/l and reaction rate constant k (base e) is 0.345 per day, the amount of BOD remaining in the given sample after 10 days is
A.	3.21 mg/l
B.	3.45 mg/l
C.	3.69 mg/l
D.	3.92 mg/l
Answer» D. 3.92 mg/l

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If the BOD3 of a waste water sample is 75 mg/l and reaction rate constant k (base e) is 0.345 per day, the amount of BOD remaining in the given sample after 10 days is

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