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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
Give two examples for Efflorescent substance.
Name the compound responsible for temporary hardness.
What are the advantages of hard water.
State the disadvantages of using hard water.
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.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
Write a note on ion exchange.
Temporary hardness of water can be removed by
