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प्रश्न
Give two examples of hydrated substances.
लघु उत्तर
उत्तर
- Washing soda (Na2CO3.10H2O)
- Gypsum (CaSO4.2H2O)
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Removal of Hardness of Water
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संबंधित प्रश्न
What is the effect on boiling point of water when pressure is increased?
Define the Soft water.
Boiling removes the ................ hardness of water.
What are the advantages of hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Give two natural sources of hard water.
What is permanent hardness of water? How can it be removed?
What is the reason for the hardness of water?
