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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 impurity is added.
Give reason for It is difficult to cook in hills compared to plain.
Boiling removes the ................ hardness of water.
What do you understand by
Soft water
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Give balanced equation to show how temporary hardness enters into water.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
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?
What is permanent hardness of water? How can it be removed?
