Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 100 mg/l 300 mg/l 400 mg/l 200 mg/l 100 mg/l 300 mg/l 400 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is 400 mg/l 200 mg/l 300 mg/l 100 mg/l 400 mg/l 200 mg/l 300 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is 500 cm/sec 413.5 cm/sec 313.5 cm/sec 213.5 cm/sec 500 cm/sec 413.5 cm/sec 313.5 cm/sec 213.5 cm/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In detritus tanks, Organic and inorganic materials are separated Detention period is kept 3 to 4 minutes Flow velocity is kept 0.09 m/sec All listed here Organic and inorganic materials are separated Detention period is kept 3 to 4 minutes Flow velocity is kept 0.09 m/sec All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is 1.25 D 1.75 D 1.15 D 1.5 D 1.25 D 1.75 D 1.15 D 1.5 D ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time? All of these 150 mm dia 100 mm dia 225 mm dia All of these 150 mm dia 100 mm dia 225 mm dia ANSWER DOWNLOAD EXAMIANS APP
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