Waste Water Engineering In a trickling filter Neither A nor B Filtration process is used Both A and B Biological action is used Neither A nor B Filtration process is used Both A and B Biological action is used 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 50 mg/l 150 mg/l 250 mg/l 100 mg/l 50 mg/l 150 mg/l 250 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of design discharge to the surface area of a sedimentation tank is called Overflow rate All of these Surface loading Overflow velocity Overflow rate All of these Surface loading Overflow velocity ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 100 ppm 50 ppm 200 ppm 150 ppm 100 ppm 50 ppm 200 ppm 150 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be 1.5 m > 1.5 m 1.2 m 0.9 cm 1.5 m > 1.5 m 1.2 m 0.9 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A rainfall may be classified as acidic if its pH value is less or equal to 7 6 6.5 5 7 6 6.5 5 ANSWER DOWNLOAD EXAMIANS APP
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