Environmental Engineering Period of cleaning of slow sand filters is about 2 - 3 months 24 - 48 hours 1 - 2 year 10 - 12 days 2 - 3 months 24 - 48 hours 1 - 2 year 10 - 12 days ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The pathogens can be killed by Chlorination None of these Nitrification Oxidation Chlorination None of these Nitrification Oxidation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Orthotolidine test is used for determination of Residual chlorine Biochemical oxygen demand Dissolved oxygen Dose of coagulant Residual chlorine Biochemical oxygen demand Dissolved oxygen Dose of coagulant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be 40 mm/hr 20 mm/hr 4 mm/hr 10 mm/hr 40 mm/hr 20 mm/hr 4 mm/hr 10 mm/hr ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to cast iron pipes, steel pipes are Less susceptible to corrosion Costlier Heavier Stronger Less susceptible to corrosion Costlier Heavier Stronger ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The specific gravity of sewage is Slightly greater than 1 Slightly less than 1 Equal to 1 Much greater than 1 Slightly greater than 1 Slightly less than 1 Equal to 1 Much greater than 1 ANSWER DOWNLOAD EXAMIANS APP
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