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 amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased The surface area of tank is increased Particle size is decreased None of these The depth of tank is decreased ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called Anti-siphonage pipe Soil pipe Waste pipe Vent pipe Anti-siphonage pipe Soil pipe Waste pipe Vent pipe ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The suitable layout of a distribution system for irregularly growing town is Radial system Dead end system Grid iron system Ring system Radial system Dead end system Grid iron system Ring system ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that Large area is required for construction BOD removal is very low Maintenance and operation cost are high None of these Large area is required for construction BOD removal is very low Maintenance and operation cost are high None of these ANSWER DOWNLOAD EXAMIANS APP
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