Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is 250 ppm 225 ppm None of these 200 ppm 250 ppm 225 ppm None of these 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Cement concrete sewers are only suitable if non-scouring velocity is between 4.5 to 5.5 m/sec 3.5 to 4.5 m/sec 3.0 to 4.0 m/sec 2.5 to 3.0 m/sec 4.5 to 5.5 m/sec 3.5 to 4.5 m/sec 3.0 to 4.0 m/sec 2.5 to 3.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Oxidation process results in the formation of Carbon dioxide Nitrates All of these Sulphates Carbon dioxide Nitrates All of these Sulphates ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In the activated sludge process Aeration is continued till stability Aeration is done with an admixture of previously aerated sludge Water is removed by centrifugal action Sludge is activated by constant stirring Aeration is continued till stability Aeration is done with an admixture of previously aerated sludge Water is removed by centrifugal action Sludge is activated by constant stirring ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sludge banks are formed if sewage is disposed of in None of these Rivers Seas Lakes None of these Rivers Seas Lakes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The standard B.O.D. of water is taken for 1 day 5 days 3 days 2 days 1 day 5 days 3 days 2 days ANSWER DOWNLOAD EXAMIANS APP
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