Environmental Engineering The alum, when added as a coagulant in water Increases pH value of water Decreases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation Increases pH value of water Decreases pH value of water Does not affect pH value of water Does not require alkalinity in water for flocculation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The distribution mains are designed for Maximum hourly demand on maximum day Maximum hourly demand Maximum daily demand Average daily demand Maximum hourly demand on maximum day Maximum hourly demand Maximum daily demand Average daily demand ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The design discharge for the combined sewer system shall be taken as Equal to rainfall Rainfall + DWF Rainfall + 2 DWF Rainfall + 6 DWF Equal to rainfall Rainfall + DWF Rainfall + 2 DWF Rainfall + 6 DWF ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Sodium permanganate Lime Copper sulphate Sulphuric acid Sodium permanganate Lime Copper sulphate Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as 8.5 to 10.0 4.5 to 6.0 10.5 to 12.0 6.5 to 8.0 8.5 to 10.0 4.5 to 6.0 10.5 to 12.0 6.5 to 8.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Activated carbon is used for Removing hardness Removing odours Removing corrosiveness Disinfection Removing hardness Removing odours Removing corrosiveness Disinfection ANSWER DOWNLOAD EXAMIANS APP
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