Environmental Engineering The effective size of sand particles used in slow sand filters is 0.35 to 0.60 mm 0.60 to 1.00 mm 0.25 to 0.35 mm 1.00 to 1.80 mm 0.35 to 0.60 mm 0.60 to 1.00 mm 0.25 to 0.35 mm 1.00 to 1.80 mm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the sewage contains grease and fatty oils, these are removed in Grit chambers Detritus tanks Sedimentation tanks Skimming tanks Grit chambers Detritus tanks Sedimentation tanks Skimming tanks ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The major disadvantage of lime soda process of water softening is that The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be 200 ppm 300 ppm 100 ppm 400 ppm 200 ppm 300 ppm 100 ppm 400 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering A pipe which is installed in the house drainage to preserve the water seal of traps is called Waste pipe Vent pipe Anti-siphonage pipe Soil pipe Waste pipe Vent pipe Anti-siphonage pipe Soil pipe ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Activated carbon is used for Removing corrosiveness Removing hardness Removing odours Disinfection Removing corrosiveness Removing hardness Removing odours Disinfection ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS