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 225 ppm 200 ppm None of these 250 ppm 225 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of a sewer is 100 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 If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains Carbon dioxide Hydrogen sulphide Oxygen Methane Carbon dioxide Hydrogen sulphide Oxygen Methane ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is Q/(L × D) Q/L Q/(B × D) Q/(B × L) Q/(L × D) Q/L Q/(B × D) Q/(B × 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 The minimum recommended diameter of sewers, is 5 cm 15 cm 20 cm 10 cm 5 cm 15 cm 20 cm 10 cm ANSWER DOWNLOAD EXAMIANS APP
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