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प्रश्न
Two samples of water are placed in a beaker individually. State how you will determine experimentally which of the two samples contains permanent hard water.
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उत्तर
Boil each sample of water separately and then two each sample add ordinary soap, the sample that lathers are temporary hard water and the sample which does not lather is permanent hard water.
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संबंधित प्रश्न
What is the effect on boiling point of water when pressure is increased?
Give reason for It is difficult to cook in hills compared to plain.
Define the Hard water.
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.
Explain the meaning of the terms – hard water & soft water.
Permanent hardness of water is due to the presence of _______.
Write a note on ion exchange.
