Environmental Engineering The disinfection efficiency of chlorine increases by (i) Decreasing the time of contact (ii) Decreasing the temperature of water (iii) Increasing the temperature of water Both (i) and (ii) Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) Both (i) and (iii) Only (iii) Only (i) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Period of cleaning of slow sand filters is about 10 - 12 days 24 - 48 hours 1 - 2 year 2 - 3 months 10 - 12 days 24 - 48 hours 1 - 2 year 2 - 3 months ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The type of sewer which is suitable for both combined and separate system is Egg shaped sewer Horseshoe type sewer Semi-elliptical sewer Circular sewer Egg shaped sewer Horseshoe type sewer Semi-elliptical sewer Circular sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Activated carbon is used for Disinfection Removing odours Removing corrosiveness Removing hardness Disinfection Removing odours Removing corrosiveness Removing hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The maximum efficiency of BOD removal is achieved in Trickling filters Oxidation ditch Aerated lagoons Oxidation pond Trickling filters Oxidation ditch Aerated lagoons Oxidation pond ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is None of these Greater than HMD when flowing full Less than HMD when flowing full Equal to HMD when flowing full None of these Greater than HMD when flowing full Less than HMD when flowing full Equal to HMD when flowing full ANSWER DOWNLOAD EXAMIANS APP
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