Environmental Engineering The effective size of sand particles used in slow sand filters is 1.00 to 1.80 mm 0.25 to 0.35 mm 0.60 to 1.00 mm 0.35 to 0.60 mm 1.00 to 1.80 mm 0.25 to 0.35 mm 0.60 to 1.00 mm 0.35 to 0.60 mm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of filtration in slow sand filters in million litres per day per hectare is about 500 to 600 100 to 150 50 to 60 1400 to 1500 500 to 600 100 to 150 50 to 60 1400 to 1500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is (i) Presumptive coli-form test (ii) Confirmed coli-form test (iii) Completed coli-form test Both (i) and (iii) Only (i) All (i), (ii) and (iii) Both (i) and (ii) Both (i) and (iii) Only (i) All (i), (ii) and (iii) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Hardy cross method of analysis of distribution system (i) Involves successive trials (ii) Takes economic aspects into account (iii) Is time consuming All are correct (i) and (ii) (i) and (iii) Only (i) All are correct (i) and (ii) (i) and (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The distribution mains are designed for Average daily demand Maximum hourly demand on maximum day Maximum hourly demand Maximum daily demand Average daily demand Maximum hourly demand on maximum day Maximum hourly demand Maximum daily demand ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the sewage contains grease and fatty oils, these are removed in Sedimentation tanks Skimming tanks Grit chambers Detritus tanks Sedimentation tanks Skimming tanks Grit chambers Detritus tanks ANSWER DOWNLOAD EXAMIANS APP
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