Civil Engineering MCQAE Level Civil Engineering
The first-order BOD exertion equation is commonly written as:
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Choose the correct answer
A
y = L0 e^{kt}
B
y = kt/L0
C
y = L0 + kt^2
D
y = L0(1 - e^{-kt})
Correct Answer
D. y = L0(1 - e^{-kt})
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BOD exerted after time t is y = L0(1 - e^{-kt}); remaining ultimate BOD is L0e^{-kt}.
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