Waste Water Engineering For design of sewers, percentage of sewage discharge is assumed 65 to 70% 70 to 75% 0.85 75 to 80% 65 to 70% 70 to 75% 0.85 75 to 80% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 400 mg/l 200 mg/l 300 mg/l 100 mg/l 400 mg/l 200 mg/l 300 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes are the manholes With depths more than 3.5 m Without entry ladders Without manhole covers Having drains at different levels With depths more than 3.5 m Without entry ladders Without manhole covers Having drains at different levels ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is 100 1000 5000 10000 100 1000 5000 10000 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The presence of free ammonia in sewage, is detected by Boiling Phenol-di-sulphuric acid Adding sulphuric acid Adding potassium permanganate Boiling Phenol-di-sulphuric acid Adding sulphuric acid Adding potassium permanganate ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer which received discharge from two or more main sewers, is known as An outfall sewer A main sewer A trunk sewer An intercepting sewer An outfall sewer A main sewer A trunk sewer An intercepting sewer ANSWER DOWNLOAD EXAMIANS APP
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