Water Supply Engineering MCQ Part 3- Environmental Engineering MCQ

Water Supply Engineering MCQ Part 3 Questions

Question No. 1
Pick up the incorrect statement from the following:
(A) The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in water
(B) Higher value of pH means lower hydrogen ion concentration
(C) Lower value of pH means higher hydrogen ion contraction
(D) Lower value of pH gives alkaline solution

Question No. 2
Mostly used coagulant, is
(A) Chlorine
(B) Alum
(C) Lime
(D) Bleaching powder

Question No. 3
A centrifugal pump is required to be primed before starting if it is located
(A) At higher level than water level of reservoir
(B) At lower level than water level of reservoir
(C) Both (a) and (b)
(D) Neither (a) nor (b)

Question No. 4
Suction lift of a pump depends upon
(A) Atmospheric pressure
(B) Water temperature
(C) Velocity of water in suction pipe
(D) All the above

Question No. 5
Normal values of overflow rate for plain sedimentation tank, is
(A) 250 to 500 litres/hr/m2
(B) 500 to 750 litres/hr/m2
(C) 750 to 1000 litres/hr/m2
(D) 1000 to 1250 litres/hr/m2

Question No. 6
‘Shrouding’ is essentially provided in
(A) Strainer type wells
(B) Cavity type wells
(C) Slotted type well
(D) All the above

Question No. 7
The maximum permissible hardness for public supplies is
(A) 95 mg/litre
(B) 105 mg/litre
(C) 115 mg/litre
(D) 125 mg/litre

Question No. 8
Time of concentration
(A) Is the time taken, for precipitation
(B) Duration of rainfall
(C) Time taken for all the ran off to reach the drain
(D) Time taken for the storm water to travel from the most remote point to the drain

Question No. 9
The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
(A) Conversion into crystals
(B) It from burning
(C) It from explosion
(D) None of these

Question No. 10
An earth formation which, although porous and capable of absorbing water does not provide an appreciable supply to wells, is known as
(A) Aquifer
(B) Aquiclude
(C) Aquifuge
(D) None of these

Water Supply Engineering MCQ Part 3 Answers

Question No 1: D

Question No 2: B

Question No 3: A

Question No 4: D

Question No 5: B

Question No 6: C

Question No 7: C

Question No 8: D

Question No 9: A

Question No 10: B

Read More: Water Supply Engineering MCQ Part 1

Read More: Water Supply Engineering MCQ Part 2