Waste Water Engineering The detention period for plain sedimentation water tanks, is usually 24 to 36 hours 4 to 8 hours 16 to 24 hours 8 to 16 hours 24 to 36 hours 4 to 8 hours 16 to 24 hours 8 to 16 hours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 50 ppm 150 ppm 200 ppm 100 ppm 50 ppm 150 ppm 200 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Dried sewage after treatment is used as Chemical for lowering B.O.D. Building material Fertilizer Base material for paints Chemical for lowering B.O.D. Building material Fertilizer Base material for paints ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called Plateau A heap Windrow None of these Plateau A heap Windrow None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For providing an Indian type W.C., the R.C.C. slabs in the toilet portion Should be sunk by 20 cm Should be kept 20 cm above the adjacent portion Should be sunk by 50 cm Need not be sunk Should be sunk by 20 cm Should be kept 20 cm above the adjacent portion Should be sunk by 50 cm Need not be sunk ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In 1000 kg of sewage, the total solids approximate 7.5 kg to 10 kg 0.5 to 1.0 kg 5 kg to 7.5 kg 1 kg to 2.0 kg 7.5 kg to 10 kg 0.5 to 1.0 kg 5 kg to 7.5 kg 1 kg to 2.0 kg ANSWER DOWNLOAD EXAMIANS APP
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