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प्रश्न
Name the compound responsible for permanent hardness of water.
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उत्तर
Permanent hard water— Water, which has sulphates and chlorides of calcium and magnesium dissolved in it, is called permanent hard water. This hardness cannot be removed by boiling.
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संबंधित प्रश्न
Give two examples for Efflorescent substance.
Temporary hardness of water can be removed by
What are the advantages of soft water.
Differentiate between Temporary & permanent hard water with suitable examples.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Fill in the blank:
Hard and soft water can be distinguished using _____.
A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
What is the reason for the hardness of water?
