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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
What is the effect on boiling point of water when pressure is increased?
State the disadvantages of using hard water.
Differentiate between Hard & soft water with suitable examples.
Give balanced equation to show how temporary hardness enters into water.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Explain the meaning of the terms – hard water & soft water.
Give two natural sources of hard water.
Temporary hardness of water can be removed by ________ of water.
Temporary hardness of water can be removed by
