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प्रश्न
Give two natural sources of hard water.
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उत्तर
Two natural sources of hard water :
- Water from springs
- River water.
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संबंधित प्रश्न
Define the Hard water.
Suggest one method for the removal along with the reaction for permanent hardness of water.
Boiling removes the ................ hardness of water.
What are the advantages of soft water.
Give balanced equation to show how temporary hardness enters into water.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
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 _____.
Explain the meaning of the terms – hard water & soft water.
Permanent hardness of water is due to the presence of _______.
