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In which one of the following the BOD (B...

In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order ?

A

SE `lt` S `lt` PE `lt` DE

B

SE `lt` PE `lt` S `lt` DE

C

PE `lt` S `lt` SE `lt` DE

D

S `lt` DE `lt` PE `lt` SE

Text Solution

Verified by Experts

The correct Answer is:
C
Usually B O D of
PE = 30mg/litre, S = 300 D E = 3400mg/lit.
SE = 2000 - 3500 mg/lit and DE = 3400 mg/lit .
Therefore PE `lt` S `lt` SE `lt` DE
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