Question

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`

Answer 1

Correct Answer - D
The ascending order of BOD is Sewage (S) `gt` Distillary Effluent (DE) `lt` Paper Mill Effluent (PE) `lt` Sugar Mill Effluent (SE).