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प्रश्न
Explain the meaning of the terms – hard water & soft water.
स्पष्ट करा
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उत्तर
- Hard Water: “Water that does not lather readily with ordinary soap and hence wastes soap” is called hard water.
- Soft Water: “Water that lather readily with ordinary soap and—hence, soap is not wasted” is called soft water.
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Removal of Hardness of Water
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संबंधित प्रश्न
Give two examples of hydrated substances.
Give two examples for Efflorescent substance.
Name the compound responsible for permanent hardness of water.
Temporary hardness of water can be removed by
State the disadvantages of using hard water.
Give balanced equation to show how temporary hardness enters into water.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
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.
Permanent hardness of water is due to the presence of _______.
Write a note on ion exchange.
