WASTEWATER ENGINEERING MCQ Civil Engineering

 WASTEWATER ENGINEERING MCQ  Civil Engineering

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part 1 questionno. 1to 10 click here to attempt

Part 2 Question no. 11 to 20 click here too attempt

21. The discharge per unit plan area of a sedimentation tank, is generally called
(A) Over flow rate
(B) Surface loading
(C) Over flow velocity
(D) All the above
Answer:(D)
22. To prevent settling down of sewage both at the bottom and on the sides of a large sewer, selfcleaning velocity recommended for Indian conditions, is
(A) 0.50 m/sec
(B) 0.60 m/sec
(C) 0.70 m/sec
(D) 0.75 m/sec
Answer:(D)
23. Assertion (A): The determination of pH value of sewerage is important.
Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value.
(A) Both A and R are true and R is the correct explanation of A
(B) Both A and R are true but R is not a correct explanation of A
(C) A is true but R is false
(D) A is false but R is true
Answer:(A)
24. The normal values of over flow rates for sedimentation tanks using coagulant, ranges between
(A) 25,000 to 35,000 liters/sqm/day
(B) 40,000 to 50,000 liters/sqm/day
(C) 50,000 to 60,000 liters/sqm/day
(D) 80,000 to 100,000 liters/sqm/day
Answer:(C)
25. Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area
for
(A) Unexpected large scale infiltration of stream water
(B) Unexpected increase in the population
(C) Under estimates of maximum and average flows
(D) All of the above
Answer:(D)