Environmental Engineering in CE Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr. 100 to 200 4000 to 5000 10 to 20 1500 to 2500 100 to 200 4000 to 5000 10 to 20 1500 to 2500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Only (iii) Both (i) and (ii) Only (i) Both (i) and (iii) Only (iii) Both (i) and (ii) Only (i) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Sedimentation Disinfection Filtration Coagulation Sedimentation Disinfection Filtration Coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The commonest form of iron & manganese found in ground water as pollutant is in the form of their Bi-carbonates Chlorides Carbonates Sulphides Bi-carbonates Chlorides Carbonates Sulphides ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fine grit present in sewage is removed in the __________ during sewage treatment. Detritus tank Grit chamber Trickling filter Skimming tank Detritus tank Grit chamber Trickling filter Skimming tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of oxidised sewage is about 6.2 13.4 7.3 1.8 6.2 13.4 7.3 1.8 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS