Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is None of these Larger Smaller Same None of these Larger Smaller Same 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 All (i), (ii) and (iii) Only (i) Both (i) and (ii) Both (i) and (iii) All (i), (ii) and (iii) Only (i) Both (i) and (ii) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 0.4 to 1.0 0.2 to 0.4 2 to 4 5 to 7 0.4 to 1.0 0.2 to 0.4 2 to 4 5 to 7 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle, is Cast iron Steel Copper Reinforced cement concrete Cast iron Steel Copper Reinforced cement concrete ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is Partially separate system Partially combined system Combined system Separate system Partially separate system Partially combined system Combined system Separate system ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The design discharge for the separate sewer system shall be taken as 2 × DWF 3 × DWF 6 × DWF Equal to dry weather flow (DWF) 2 × DWF 3 × DWF 6 × DWF Equal to dry weather flow (DWF) ANSWER DOWNLOAD EXAMIANS APP
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