Waste Water Engineering A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is 100 10000 1000 5000 100 10000 1000 5000 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering With self cleansing velocity in sewers Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is pt = 3H3p/2 Z5 pt = 3H3p/2 Z5 pt = 2H3p/3 Z5 pt = 2H3p/3 Z5 pt = 3H3p/2 Z5 pt = 3H3p/2 Z5 pt = 2H3p/3 Z5 pt = 2H3p/3 Z5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a trickling filter Neither A nor B Biological action is used Filtration process is used Both A and B Neither A nor B Biological action is used Filtration process is used Both A and B ANSWER DOWNLOAD EXAMIANS APP
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 200 ppm 250 ppm 225 ppm None of these 200 ppm 250 ppm 225 ppm None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A rainfall may be classified as acidic if its pH value is less or equal to 6.5 5 6 7 6.5 5 6 7 ANSWER DOWNLOAD EXAMIANS APP
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