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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 of hydrated substances.
Define the Hard water.
Name the compound responsible for temporary hardness.
Boiling removes the ................ hardness of water.
State the disadvantages of using hard water.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between hard and soft water?
State the causes of hardness in water.
Temporary hardness of water can be removed by ________ of water.
Write a note on ion exchange.
Temporary hardness of water can be removed by
