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 200 mg/l 300 mg/l 100 mg/l 400 mg/l 200 mg/l 300 mg/l 100 mg/l 400 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The asbestos cement sewers are All of these Light in weight Not structurally strong to bear large compressive stress Susceptible to corrosion by sulphuric acid All of these Light in weight Not structurally strong to bear large compressive stress Susceptible to corrosion by sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The formula V = (1/n) r2/3 Kutter’s formula Bazin’s formula Chezy’s formula Manning’s formula Kutter’s formula Bazin’s formula Chezy’s formula Manning’s formula ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is 90 cm 50 cm 80 cm 100 cm 90 cm 50 cm 80 cm 100 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design purposes, the normal rate of infiltration of ground water into the sewer, is 2000 litres/km/cm 1500 litres/km/cm 1000 litres/km/cm 500 litres/km/cm 2000 litres/km/cm 1500 litres/km/cm 1000 litres/km/cm 500 litres/km/cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following gases is most significant as air pollutant? Nitrogen Sulphur-dioxide Carbondioxide Oxygen Nitrogen Sulphur-dioxide Carbondioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
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