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प्रश्न
Give two examples for Efflorescent substance.
एक पंक्ति में उत्तर
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उत्तर
Washing soda and glauber’s salt (Na2SO4.10 H2O)
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Removal of Hardness of Water
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संबंधित प्रश्न
Give reason for It is difficult to cook in hills compared to plain.
What do you observe when Washing soda is exposed to air ?
Define the Hard water.
What are the advantages of hard water.
State the disadvantages of using hard water.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
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.
Write a note on ion exchange.
