Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 8 to 10 4 to 6 2 to 4 6 to 8 8 to 10 4 to 6 2 to 4 6 to 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Scour valves are provided At every depression and dead ends to drain out the waste water that may collect there 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 summit of rising mains At every depression and dead ends to drain out the waste water that may collect there 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 summit of rising mains ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In facultative stabilization pond, the sewage is treated by Dual action of aerobic bacteria and anaerobic bacteria Sedimentation Aerobic bacteria only Algae only Dual action of aerobic bacteria and anaerobic bacteria Sedimentation Aerobic bacteria only Algae only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process of lagooning is primarily a means of Increasing the capacity of storage reservoirs Reducing the excessive flow in sewers Disposing of sludge Increasing flow of sewage through imhoff tanks Increasing the capacity of storage reservoirs Reducing the excessive flow in sewers Disposing of sludge Increasing flow of sewage through imhoff tanks ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 1400 to 1500 50 to 60 100 to 150 500 to 600 1400 to 1500 50 to 60 100 to 150 500 to 600 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Laying of sewers is usually done with the help of A compass Sight rails and boning rods A plane table A Theodolite A compass Sight rails and boning rods A plane table A Theodolite ANSWER DOWNLOAD EXAMIANS APP
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