Environmental Engineering in CE Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Settling out using chemical reagents Skimming off Biological oxidation Chlorination Settling out using chemical reagents Skimming off Biological oxidation Chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible residual chlorine in treated water should be __________ mg/litre. 0.001 to 0.01 02 to 0.3 5 to 10 2 to 3 0.001 to 0.01 02 to 0.3 5 to 10 2 to 3 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 5-200 μm size particles are called Smoke Dust Colloids or aerosols Powder Smoke Dust Colloids or aerosols Powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level inside a jet air liner in normal flight is about __________ decibels. 100 125 145 80 100 125 145 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh domestic sewage is __________ in color. Black Grey Dark brown Red Black Grey Dark brown Red ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Soluble silica present in boiler feed water can be removed by Preheating it Filtration Anion exchanger Coagulation Preheating it Filtration Anion exchanger Coagulation ANSWER DOWNLOAD EXAMIANS APP
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