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प्रश्न
Define the Hard water.
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उत्तर
Water obtained from various sources does not easily form a lather with soap, rather it forms a white sticky scum or a precipitate. This water is called hard water.
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संबंधित प्रश्न
Define the Soft water.
Suggest one method for the removal along with the reaction for permanent hardness of water.
State the disadvantages of using hard 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.
State the causes of hardness in water.
Permanent hardness of water is due to the presence of _______.
What is the reason for the hardness of water?
