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प्रश्न
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
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उत्तर
Washing soda Na2CO3 exchanges ions [SO4]– and Cl– and do not make water hard.
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संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
Define the Soft water.
Name the compound responsible for temporary hardness.
Boiling removes the ................ hardness of 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.
Fill in the blank:
Hard and soft water can be distinguished using _____.
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.
What is permanent hardness of water? How can it be removed?
What is the reason for the hardness of water?
Temporary hardness of water can be removed by
