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Water Supply Engineering MCQs

Free 26+ Water Supply Engineering MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

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Water Supply Engineering — MCQs for Pakistan government job tests

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Water Supply Engineering

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1.According to IS: 1172-1963, what is the standard daily water requirement per person for typical domestic use?

2.In a city with a population of 4 million, if four separate fires occur simultaneously, each hydrant supplies three water streams, and each fire lasts for four hours, what is the total volume of water needed?

3.What is the primary reason for aerating water during treatment?

4.What is the primary purpose of disinfecting drinking water?

5.An open well is constructed in coarse sand with an expected discharge of 0.0059 cubic meters per second. Given that the working drawdown (depression head) is 3 meters, what is the minimum required diameter of the well?

6.What does the term 'time of concentration' refer to in hydrology?

7.What is the maximum turbidity level of raw water that slow sand filters can effectively remove?

8.What factors contribute to the acidity found in water?

9.Which of the following methods does NOT help in minimizing corrosion of well pipes?

10.What is the upper limit for the depth of sedimentation tanks?

11.Which non-empirical formula is most frequently applied to calculate the velocity of groundwater flow?

12.In which type of soil is the specific retention the lowest?

13.Which of the following influences the per capita water demand?

14.As per IS: 1172-1963, what is the minimum daily water requirement of 135 litres per person intended for?

15.Which of the following is NOT a source of groundwater?

16.Given that the ground water table elevation on the valley sides is 1505 m, and the stream water elevation is 1475 m, with a 60° slope of permeable soil between elevations 1485 m and 1500 m, at which reduced level is a gravity spring likely to occur?

17.What is the minimum wall thickness for a Class B spun cast iron pipe?

18.Boiling water effectively eliminates hardness caused by which of the following compounds?

19.Which of the following characteristics apply to asbestos pipes?

20.Where are drain valves typically installed in distribution pipelines?

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