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प्रश्न
What do you observe when Washing soda is exposed to air ?
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उत्तर
Washing soda (Na2CO3.10H2O) is a white crystalline substance and on exposure to air it gets changed to white powder.
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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.
Define the Soft water.
Define the Hard water.
Name the compound responsible for temporary hardness.
Boiling removes the ................ hardness of water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
State the causes of hardness in water.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
