Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Sulphuric acid Sodium permanganate Lime Copper sulphate Sulphuric acid Sodium permanganate Lime Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 1.5 2.7 2.0 1.8 1.5 2.7 2.0 1.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Composting and lagooning are the methods of Sludge digestion Filtration Sludge disposal Sedimentation Sludge digestion Filtration Sludge disposal Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In lime-soda process Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only noncarbonated hardness is removed Only carbonate hardness is removed Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness Only noncarbonated hardness is removed Only carbonate hardness is removed 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 The detention period for oxidation ponds is usually kept as 10 to 15 days 48 hours 24 hours 3 months 10 to 15 days 48 hours 24 hours 3 months ANSWER DOWNLOAD EXAMIANS APP
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