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 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 Alkalinity in water is expressed as milligrams per litre in terms of equivalent Sodium carbonate Calcium carbonate Magnesium carbonate Calcium hydroxide Sodium carbonate Calcium carbonate Magnesium carbonate Calcium hydroxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle, is Reinforced cement concrete Cast iron Copper Steel Reinforced cement concrete Cast iron Copper Steel ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Chlorine demand of water is equal to Sum of applied and residual chlorine Applied chlorine Difference of applied and residual chlorine Residual chlorine Sum of applied and residual chlorine Applied chlorine Difference of applied and residual chlorine Residual chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process of lagooning is primarily a means of Reducing the excessive flow in sewers Disposing of sludge Increasing the capacity of storage reservoirs Increasing flow of sewage through imhoff tanks Reducing the excessive flow in sewers Disposing of sludge Increasing the capacity of storage reservoirs Increasing flow of sewage through imhoff tanks ANSWER DOWNLOAD EXAMIANS APP
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