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- Subject
- Water Supply Engineeringcivil-engineering-mcqs › water-supply-engineering
- Published
- 19 Jan 2019
- Last updated
- 28 May 2026
Explanation
Temporary hardness in water, caused by calcium bicarbonate, can be removed by boiling. This process precipitates the bicarbonate, softening the water. Other compounds like calcium sulfate, magnesium sulfate, and calcium nitrate cause permanent hardness, which boiling cannot remove.
More Water Supply Engineering MCQs
Practice related questions from the same subject.
- 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?
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