Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is 250 ppm 200 ppm None of these 225 ppm 250 ppm 200 ppm None of these 225 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering As compared to fresh river water, sea water contains oxygen 10% more 20% more 10% less 20% less 10% more 20% more 10% less 20% less ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For efficient working of a sewer, it must be ensured that Neither (A) nor (B) Both (A) and (B) A maximum velocity of 0.90 m/sec, is maintained at its maximum flow Minimum velocity of 0.45 m/sec, is maintained at its minimum flow Neither (A) nor (B) Both (A) and (B) A maximum velocity of 0.90 m/sec, is maintained at its maximum flow Minimum velocity of 0.45 m/sec, is maintained at its minimum flow ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is Glazed bricks sewers Cast iron sewers Cement concrete sewers Stone ware sewers Glazed bricks sewers Cast iron sewers Cement concrete sewers Stone ware sewers ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of minimum hourly flow to the average flow of sewage is 43834 43894 43832 43833 43834 43894 43832 43833 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer ventilating columns are generally placed at Every change in the size of sewers Upper ends of branch sewers All listed here Distances 150 m to 300 m Every change in the size of sewers Upper ends of branch sewers All listed here Distances 150 m to 300 m ANSWER DOWNLOAD EXAMIANS APP
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