Waste Water Engineering For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed 4 ppm 5 ppm 3 ppm 10 ppm 4 ppm 5 ppm 3 ppm 10 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Removal of oil and grease from sewage, is known Filtration None of these Screening Skimming Filtration None of these Screening Skimming ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In trickling filter, B.O.D. is reduced to 60 to 80% 80 to 90% 40 to 60% 30 to 40% 60 to 80% 80 to 90% 40 to 60% 30 to 40% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A well oxidized sewage contains nitrogen mainly as Nitrates Free ammonia Nitrites None of these Nitrates Free ammonia Nitrites None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a grit chamber of a sewage treatment plant, Depth of 0.9 m to 1.20 m is kept Flow velocity 0.15 m to 0.3 m/sec is kept All of these One minute of detention period is kept Depth of 0.9 m to 1.20 m is kept Flow velocity 0.15 m to 0.3 m/sec is kept All of these One minute of detention period is kept ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Chlorination of water is done for the removal of Hardness Sediments Suspended solids Bacterias Hardness Sediments Suspended solids Bacterias ANSWER DOWNLOAD EXAMIANS APP
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