Environmental Engineering Period of cleaning of slow sand filters is about 10 - 12 days 24 - 48 hours 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours 2 - 3 months 1 - 2 year ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to cast iron pipes, steel pipes are Stronger Heavier Less susceptible to corrosion Costlier Stronger Heavier Less susceptible to corrosion Costlier ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 8.5 to 10.0 10.5 to 12.0 6.5 to 8.0 4.5 to 6.0 8.5 to 10.0 10.5 to 12.0 6.5 to 8.0 4.5 to 6.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally Less and less More and less Less and more More and more Less and less More and less Less and more More and more ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Cleaning is done by (i) Scraping and removal in filters slow sand (ii) Back washing in slow sand filters (iii) Scraping and removal in filters rapid sand (iv) Back washing in rapid sand filters The correct answer is (i) and (iv) (i) and (ii) (ii) and (iii) (ii) and (iv) (i) and (iv) (i) and (ii) (ii) and (iii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The layout of distribution system in which water flows towards the outer periphery is Grid iron system Dead end system Radial system Ring system Grid iron system Dead end system Radial system Ring system ANSWER DOWNLOAD EXAMIANS APP
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