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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 two examples of hydrated substances.
Name three water borne diseases.
State the disadvantages of using hard water.
Differentiate between Hard & soft water with suitable examples.
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.
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.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
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.
