Environmental Engineering Scour valves are provided At every summit of rising mains At street corners to control the flow of water At the foot of rising main along the slope to prevent back running of water At every depression and dead ends to drain out the waste water that may collect there At every summit of rising mains At street corners to control the flow of water At the foot of rising main along the slope to prevent back running of water At every depression and dead ends to drain out the waste water that may collect there ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The pathogens can be killed by Chlorination Nitrification Oxidation None of these Chlorination Nitrification Oxidation None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period for oxidation ponds is usually kept as 3 months 24 hours 10 to 15 days 48 hours 3 months 24 hours 10 to 15 days 48 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering On standard silica scale, the turbidity in drinking water should be limited to 20 ppm 30 ppm 10 ppm 50 ppm 20 ppm 30 ppm 10 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following chemical compounds can be used for de-chlorination of water? Carbon dioxide Chloramines Sulphur dioxide Bleaching powder Carbon dioxide Chloramines Sulphur dioxide Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 2 to 4 6 to 8 8 to 10 4 to 6 2 to 4 6 to 8 8 to 10 4 to 6 ANSWER DOWNLOAD EXAMIANS APP
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