Environmental Engineering MCQs

A. dissolved oxygen

B. residual chlorine

C. biochemical oxygen demand

D. dose of coagulant

A. specific gravity of solid particles

B. size of particles

C. depth of tank

D. temperature of liquid

A. inlet

B. manhole

C. drop manhole

D. catch basin

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. starch iodide method

B. orthotolidine method

C. both (A) and (B)

D. none of the above

A. 0.01 to 0.05 ppm

B. 0.05 to 0.5 ppm

C. 0.5 to 1.0 ppm

D. 1.0 to 5.0 ppm

A. 10 years

B. 25 years

C. 50 years

D. 75 years

A. 10 to 15

B. 20 to 25

C. 30 to 35

D. 40 to 50

A. house sewer

B. lateral sewer

C. intercepting sewer

D. submain sewer

A. vent pipe

B. antisiphonage pipe

C. waste pipe

D. soil pipe