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प्रश्न
What are the methods of removing hardness of water?
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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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संबंधित प्रश्न
Give reason for It is difficult to cook in hills compared to plain.
Name the compound responsible for temporary hardness.
What are the advantages of hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Differentiate between Temporary & permanent hard water with suitable examples.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Fill in the blank:
Hard and soft water can be distinguished using _____.
Explain the meaning of the terms – hard water & soft water.
A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.
Name the process by which temporary hardness is easily removed from the water.
