Environmental Engineering The maximum efficiency of BOD removal is achieved in Oxidation ditch Oxidation pond Trickling filters Aerated lagoons Oxidation ditch Oxidation pond Trickling filters Aerated lagoons ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The velocity of flow does not depend on Grade of sewer Hydraulic mean depth of sewer Roughness of sewer Length of sewer Grade of sewer Hydraulic mean depth of sewer Roughness of sewer Length of sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For normal sludge, the value of sludge index for Indian conditions is 350 to 500 0 to 50 50 to 150 150 to 350 350 to 500 0 to 50 50 to 150 150 to 350 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The alum, when added as a coagulant in water Decreases pH value of water Does not affect pH value of water Increases pH value of water Does not require alkalinity in water for flocculation Decreases pH value of water Does not affect pH value of water Increases pH value of water Does not require alkalinity in water for flocculation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The distribution mains are designed for Average daily demand Maximum hourly demand Maximum daily demand Maximum hourly demand on maximum day Average daily demand Maximum hourly demand Maximum daily demand Maximum hourly demand on maximum day ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period in coagulation tanks is usually kept as 2 to 6 hours 2 to 6 days 1 to 2 minutes 30 to 45 minutes 2 to 6 hours 2 to 6 days 1 to 2 minutes 30 to 45 minutes ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS