Civil Engineering MCQAE Level Civil Engineering
If the BOD of a wastewater sample is 180 mg/l after 5 days at 20°C, the BOD for one day at the same temperature is [Kd (base e) = 0.23/day]
Environmental EngineeringEnvironmental EngineeringMEDIUM
Choose the correct answer
A
48 mg/l
B
54 mg/l
C
94 mg/l
D
220 mg/l
Correct Answer
B. 54 mg/l
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BOD after one day by first-order deoxygenation is about 54 mg/L.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.