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 100 mg/l 300 mg/l 200 mg/l 400 mg/l 100 mg/l 300 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Rate of flow of sewage is generally assumed Less than the rate of water supply More than the rate of water supply Equal to the rate of water supply At 150 litres per capita Less than the rate of water supply More than the rate of water supply Equal to the rate of water supply At 150 litres per capita ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hume steel pipes are Both B and C Steel pipes Steel shell coated from inside with cement mortar Steel shell coated from outside with cement mortar Both B and C Steel pipes Steel shell coated from inside with cement mortar Steel shell coated from outside with cement mortar ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering During purification process of sewage the gas given off, is All listed here Carbon dioxide Ammonia Hydrogen All listed here Carbon dioxide Ammonia Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Pathogens (or pathogenic bacterias) in water may cause All listed here Cholera Typhoid Dysentery All listed here Cholera Typhoid Dysentery ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal values of over flow rates for sedimentation tanks using coagulant, ranges between 80,000 to 100,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
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