The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known
A. Bio-Chemical Oxygen Demand (B.O.D.)
B. Dissolved Oxygen (D.O.)
C. Chemical Oxygen Demand (C.O.D.)
D. None of these
Answer: Option B
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Related Questions on Waste Water Engineering
The effluent of a septic tank is
A. Fit for discharge into any open drain
B. Foul and contains dissolved and suspended solids
C. As good as that from a complete treatment
D. None of these
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A. 1 in 5
B. 1 in 10
C. 1 in 15
D. 1 in 20
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A. Without entry ladders
B. Without manhole covers
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D. Having drains at different levels
Answer is A