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प्रश्न
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.
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उत्तर
Boil each sample of water separately and then two each sample add ordinary soap, the sample that lathers are temporary hard water and the sample which does not lather is permanent hard water.
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संबंधित प्रश्न
What is the effect on boiling point of water when impurity is added.
What do you observe when Washing soda is exposed to air ?
Define the Hard water.
What are the advantages of soft water.
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.
Explain the meaning of the terms – hard water & soft water.
Permanent hardness of water is due to the presence of _______.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
