Environmental Engineering The major disadvantage of lime soda process of water softening is that Huge amount of precipitate is formed which creates a disposal problem The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness It is unsuitable for turbid and acidic water Huge amount of precipitate is formed which creates a disposal problem The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness It is unsuitable for turbid and acidic water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to cast iron pipes, steel pipes are Less susceptible to corrosion Costlier Stronger Heavier Less susceptible to corrosion Costlier Stronger Heavier ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The chemical most commonly used to increase speed of sedimentation of sewage is Sulphuric acid Lime Sodium permanganate Copper sulphate Sulphuric acid Lime Sodium permanganate Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The main disadvantage of cement concrete sewers is Difficulty in transportation due to heavy weight Less life Less strength Difficulty in construction Difficulty in transportation due to heavy weight Less life Less strength Difficulty in construction 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 The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally More and less Less and less More and more Less and more More and less Less and less More and more Less and more ANSWER DOWNLOAD EXAMIANS APP
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