Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is None of these 250 ppm 200 ppm 225 ppm None of these 250 ppm 200 ppm 225 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The use of coarse screens for the disposal of sewage, may be dispensed with by Shredder Comminutor Both A and B Neither A nor B Shredder Comminutor Both A and B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept 5 2 0.25 10 5 2 0.25 10 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering When drainage to sewage ratio is 20, the peak dry weather flow is 20% of the design discharge Slightly more than 5% of the design discharge None of these Slightly less than 5% of the design discharge 20% of the design discharge Slightly more than 5% of the design discharge None of these Slightly less than 5% of the design discharge ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is 1 in 100 1 in 60 None of these 1 in 120 1 in 100 1 in 60 None of these 1 in 120 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For large sewers, maximum distance between manholes may be 200 m 300 m 50 m 100 m 200 m 300 m 50 m 100 m ANSWER DOWNLOAD EXAMIANS APP
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