Waste Water Engineering In trickling filter, B.O.D. is reduced to 60 to 80% 30 to 40% 40 to 60% 80 to 90% 60 to 80% 30 to 40% 40 to 60% 80 to 90% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ‘Cowl’ is provided at Lower end of ventilating column First step in manhole Upper end of ventilating column Upper end of the manhole Lower end of ventilating column First step in manhole Upper end of ventilating column Upper end of the manhole ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of bars of perforations of fine screens used for the treatment of sewage, is 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Antisyphonage pipe is fitted With a W.'trap At the beginning of sewer line At the end of septic tanks On manholes With a W.'trap At the beginning of sewer line At the end of septic tanks On manholes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following part of human body withstands minimum radiation? Thyroid Kidneys Ovaries/testis Eyes Thyroid Kidneys Ovaries/testis Eyes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In normal conditions, the period for sludge digestion, is 20 days 10 days 60 days 30 days 20 days 10 days 60 days 30 days ANSWER DOWNLOAD EXAMIANS APP
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