Waste Water Engineering The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known None of these Bio-Chemical Oxygen Demand (B.O.D.) Dissolved Oxygen (D.O.) Chemical Oxygen Demand (C.O.D.) None of these Bio-Chemical Oxygen Demand (B.O.D.) Dissolved Oxygen (D.O.) Chemical Oxygen Demand (C.O.D.) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Large diameter sewers subjected to external pressure alone, are reinforced Near the inner surface of the pipe Near the outer surface of the pipe Both A and B With elliptical cage Near the inner surface of the pipe Near the outer surface of the pipe Both A and B With elliptical cage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is 1 in 100 1 in 60 1 in 120 None of these 1 in 100 1 in 60 1 in 120 None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer which resists sulphide corrosion, is Cast iron sewer R.C. sewer Brick sewer Lead sewer Cast iron sewer R.C. sewer Brick sewer Lead sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Dried sewage after treatment is used as Building material Fertilizer Base material for paints Chemical for lowering B.O.D. Building material Fertilizer Base material for paints Chemical for lowering B.O.D. ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In 1000 kg of sewage, the total solids approximate 7.5 kg to 10 kg 1 kg to 2.0 kg 0.5 to 1.0 kg 5 kg to 7.5 kg 7.5 kg to 10 kg 1 kg to 2.0 kg 0.5 to 1.0 kg 5 kg to 7.5 kg ANSWER DOWNLOAD EXAMIANS APP
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