Top 250+ Solved Water and Wastewater Engineering MCQ Questions Answer

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Q. The best process of disinfection of public water supply, is by

a. Boiling

b. Chlorination

c. Adding lime

d. Adding ozone

  • b. Chlorination
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Q. The dilution ratio at which the odour is hardly detectable is generally called threshold odournumber and for public supplies it should not exceed

a. 3

b. 5

c. 7

d. 9

Q. Surge tanks are used

a. For storage water

b. To increase the velocity in a pipeline

c. As overflow valves

d. To guard against water hammer

  • d. To guard against water hammer
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