Environmental Engineering In facultative stabilization pond, the sewage is treated by Aerobic bacteria only Sedimentation Algae only Dual action of aerobic bacteria and anaerobic bacteria Aerobic bacteria only Sedimentation Algae only Dual action of aerobic bacteria and anaerobic bacteria ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that Maintenance and operation cost are high None of these BOD removal is very low Large area is required for construction Maintenance and operation cost are high None of these BOD removal is very low Large area is required for construction ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 2.0 1.5 1.8 2.7 2.0 1.5 1.8 2.7 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The most commonly used sewer under culverts is Circular cast iron sewer Semi-elliptical sewer Horseshoe type sewer Circular brick sewer Circular cast iron sewer Semi-elliptical sewer Horseshoe type sewer Circular brick sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Average rate of water consumption per head per day as per Indian Standard is 200 liters 165 liters 135 liters 100 liters 200 liters 165 liters 135 liters 100 liters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be 100 ppm 400 ppm 200 ppm 300 ppm 100 ppm 400 ppm 200 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS