Environmental Engineering MCQ Questions & Answers | Civil Engineering

A. Separate system

B. Combined system

C. Partially separate system

D. Partially combined system

A. Only carbonate hardness is removed

B. Only noncarbonated hardness is removed

C. Lime reduces the carbonate hardness and soda-ash removes the non-carbonate hardness

D. Lime reduces the non-carbonate hardness and soda-ash removes the carbonate hardness

A. At street corners to control the flow of water

B. At every depression and dead ends to drain out the waste water that may collect there

C. At the foot of rising main along the slope to prevent back running of water

D. At every summit of rising mains

A. 1,00,000 m³

B. 1,50,000 m³

C. 1,80,000 m³

D. 2,70,000 m³

A. Maximum flow only

B. Minimum flow only

C. Average flow only

D. Maximum and minimum flow

A. Reducing the excessive flow in sewers

B. Disposing of sludge

C. Increasing the capacity of storage reservoirs

D. Increasing flow of sewage through imhoff tanks

A. $$\frac{1}{3}$$

B. $$\frac{2}{3}$$

C. $$\frac{3}{4}$$

D. $$1$$

A. Air relief valve

B. Reflux valve

C. Pressure relief valve

D. Sluice valve

A. Increasing the depth of tank

B. Decreasing the depth of tank

C. Increasing the surface area of tank

D. Decreasing the surface area of tank

A. Depth of tank

B. Surface area of tank

C. Both depth and surface area of tank

D. None of the above