1.

The amount of Oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known as

A. Dissolved Oxygen (D.O.)
B. Biochemical Oxygen Demand (B.O.D.)
C. Chemical Oxygen Demand (C.O.D.)
D. None of the above
Answer» C. Chemical Oxygen Demand (C.O.D.)


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