Environmental Engineering The characteristics of fresh and septic sewage respectively are Acidic and alkaline Both acidic Alkaline and acidic Both alkaline Acidic and alkaline Both acidic Alkaline and acidic Both alkaline ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 6 to 8 2 to 4 8 to 10 4 to 6 6 to 8 2 to 4 8 to 10 4 to 6 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Sodium permanganate Lime Sulphuric acid Copper sulphate Sodium permanganate Lime Sulphuric acid Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Air binding phenomena in rapid sand filters occur due to Higher turbidity in the effluent Low temperature Excessive negative head Mud ball formation Higher turbidity in the effluent Low temperature Excessive negative head Mud ball formation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Activated carbon is used for Removing hardness Disinfection Removing corrosiveness Removing odours Removing hardness Disinfection Removing corrosiveness Removing odours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of oxidation pond is that None of these BOD removal is very low Large area is required for construction Maintenance and operation cost are high None of these BOD removal is very low Large area is required for construction Maintenance and operation cost are high ANSWER DOWNLOAD EXAMIANS APP
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