Civil Engineering MCQAE Level Civil Engineering
The rate of deoxygenation L_D in a river may be expressed as
Environmental EngineeringEnvironmental EngineeringMEDIUM
Choose the correct answer
A
L_D = K1 L0 e^(-K1t)
B
L_D = L0 e^(-K1t)
C
L_D = L0/e^(K1t)
D
L_D = e^(-K1t)/L0
Correct Answer
B. L_D = L0 e^(-K1t)
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First-order BOD exertion gives deoxygenation rate proportional to remaining ultimate BOD; official key B
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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.