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प्रश्न
What are the methods of removing hardness of water?
संक्षेप में उत्तर
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उत्तर
- Boiling – Temporary hardness is easily removed from water by boiling.
- Adding washing soda – Washing soda is used to remove the permanent hardness of the water.
- Ion-exchange – This converts hard water into soft water.
- Distillation – Temporary and permanent hardness both can be removed by the method of distillation.
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Removal of Hardness of Water
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अध्याय 13: Water - Exercises [पृष्ठ १५४]
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संबंधित प्रश्न
What is the effect on boiling point of water when pressure is increased?
Give two examples of hydrated substances.
Define the Hard water.
What are the advantages of soft water.
State the disadvantages of using hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Explain the meaning of the terms – hard water & soft water.
Write a note on ion exchange.
