Environmental Engineering The self cleansing velocity for all sewers in India is usually Less than 1.0 m/sec 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec Less than 1.0 m/sec 1.5 m/sec to 2.0 m/sec 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of Alteration of pressure filters is Less than that of slow sand filters Greater than that of rapid sand filters Equal to that of slow sand filters In between the filtration rate of slow sand filters and rapid sand filters Less than that of slow sand filters Greater than that of rapid sand filters Equal to that of slow sand filters In between the filtration rate of slow sand filters and rapid sand filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Scour valves are provided At the foot of rising main along the slope to prevent back running of water At every summit of rising mains At street corners to control the flow of water At every depression and dead ends to drain out the waste water that may collect there At the foot of rising main along the slope to prevent back running of water At every summit of rising mains At street corners to control the flow 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 suitable method for disinfection of swimming pool water is Lime treatment Chlorination Ultra violet rays treatment By using potassium permanganate Lime treatment Chlorination Ultra violet rays treatment By using potassium permanganate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is (i) and (ii) (ii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of BOD exerted at any time is Directly proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD satisfied Inversely proportional to BOD remaining Directly proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD satisfied Inversely proportional to BOD remaining ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS