Waste Water Engineering If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is 300 mg/l 400 mg/l 200 mg/l 100 mg/l 300 mg/l 400 mg/l 200 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The underground sewers are more subjected to Tensile force Compressive force Bending force Shearing force Tensile force Compressive force Bending force Shearing force ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Acid regression stage of sludge digestion at a temperature 21°C extends over a period of 90 days 15 days 60 days 30 days 90 days 15 days 60 days 30 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The formula V = (1/n) r2/3 Bazin’s formula Chezy’s formula Kutter’s formula Manning’s formula Bazin’s formula Chezy’s formula Kutter’s formula Manning’s formula ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Inter-distance between ventilation columns in a sewer line is kept 25 to 50 m 150 m to 300 m 50 m to 100 m 100 m to 150 m 25 to 50 m 150 m to 300 m 50 m to 100 m 100 m to 150 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Sulphuric acid Nitric acid Hydrochloric acid Citric acid Sulphuric acid Nitric acid Hydrochloric acid Citric acid ANSWER DOWNLOAD EXAMIANS APP
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