Waste Water Engineering The spacing of bars of perforations of fine screens used for the treatment of sewage, is 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewage treatment in septic tanks is due to Anaerobic decomposition Aerobic decomposition Parasitic decomposition None of these Anaerobic decomposition Aerobic decomposition Parasitic decomposition None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is 0.05554 cumec 0.0556 cumec 0.05556 cumec 0.05552 cumec 0.05554 cumec 0.0556 cumec 0.05556 cumec 0.05552 cumec ANSWER DOWNLOAD EXAMIANS APP
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 250 mg/l 150 mg/l 100 mg/l 50 mg/l 250 mg/l 150 mg/l 100 mg/l 50 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is 0.30 m/sec 0.35 m/sec 0.40 m/sec 0.45 m/sec 0.30 m/sec 0.35 m/sec 0.40 m/sec 0.45 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Facultative bacteria survive in The presence of oxygen Both cases A and B The absence of oxygen Neither A nor B The presence of oxygen Both cases A and B The absence of oxygen Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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