Environmental Engineering Residual chlorine in water is determined by Orthotolidine method Starch iodide method None of these Both (A) and (B) Orthotolidine method Starch iodide method None of these Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Period of cleaning of slow sand filters is about 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours 2 - 3 months 1 - 2 year 10 - 12 days 24 - 48 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In lime-soda process Only noncarbonated hardness is removed Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Only carbonate hardness is removed Only noncarbonated hardness is removed Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Only carbonate hardness is removed ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The settling velocity of a particle in a sedimentation tank increases if The depth of tank is decreased The surface area of tank is increased None of these Particle size is decreased The depth of tank is decreased The surface area of tank is increased None of these Particle size is decreased ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine Residual chlorine Difference of applied and residual chlorine Applied chlorine Sum of applied and residual chlorine Residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that BOD removal is very low Large area is required for construction None of these Maintenance and operation cost are high BOD removal is very low Large area is required for construction None of these Maintenance and operation cost are high ANSWER DOWNLOAD EXAMIANS APP
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