Environmental Engineering In water treatment, rapid gravity filters are adopted to remove Dissolved organic substances Floating solids and dissolved inorganic solids Dissolved solids and dissolved gases Bacteria and colloidal solids Dissolved organic substances Floating solids and dissolved inorganic solids Dissolved solids and dissolved gases Bacteria and colloidal solids ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i)and(iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Scour valves are provided At the foot of rising main along the slope to prevent back running of water At every summit of rising mains At every depression and dead ends to drain out the waste water that may collect there At street corners to control the flow of water At the foot of rising main along the slope to prevent back running of water At every summit of rising mains At every depression and dead ends to drain out the waste water that may collect there At street corners to control the flow of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a given discharge, the efficiency of sedimentation tank can be increased by Increasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Decreasing the depth of tank Increasing the depth of tank Decreasing the surface area of tank Increasing the surface area of tank Decreasing the depth of tank ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of Alteration of pressure filters is Greater than that of rapid sand filters In between the filtration rate of slow sand filters and rapid sand filters Equal to that of slow sand filters Less than that of slow sand filters Greater than that of rapid sand filters In between the filtration rate of slow sand filters and rapid sand filters Equal to that of slow sand filters Less than that of slow sand filters ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The treatment of water with bleaching powder is known as De-chlorination Hypo-chlorination Super chlorination Pre-chlorination De-chlorination Hypo-chlorination Super chlorination Pre-chlorination ANSWER DOWNLOAD EXAMIANS APP
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