Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 150 mg/l 50 mg/l 250 mg/l 100 mg/l 150 mg/l 50 mg/l 250 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The quantity of liquid waste which flows in sewers during the period of rainfall, is known Industrial waste Storm sewage Sanitary sewage None of these Industrial waste Storm sewage Sanitary sewage None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the grit in grit chambers is 4.5 million litres per day, its cleaning is done Manually Electrically Hydraulically Mechanically Manually Electrically Hydraulically Mechanically ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewerage system consists of House sewer All of these Branch sewer Lateral sewer House sewer All of these Branch sewer Lateral sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known Bio-Chemical Oxygen Demand (B.O.D.) Chemical Oxygen Demand (C.O.D.) None of these Dissolved Oxygen (D.O.) Bio-Chemical Oxygen Demand (B.O.D.) Chemical Oxygen Demand (C.O.D.) None of these Dissolved Oxygen (D.O.) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is D/4 D/1 D/2 D/3 D/4 D/1 D/2 D/3 ANSWER DOWNLOAD EXAMIANS APP
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