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प्रश्न
Explain the meaning of the terms – hard water & soft water.
उत्तर
- Hard Water: “Water that does not lather readily with ordinary soap and hence wastes soap” is called hard water.
- Soft Water: “Water that lather readily with ordinary soap and—hence, soap is not wasted” is called soft water.
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संबंधित प्रश्न
Give two examples for Efflorescent substance.
Name the compound responsible for permanent hardness of water.
Name three water borne diseases.
What are the advantages of soft water.
What are the advantages of hard water.
State the disadvantages of using hard 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.
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.
Temporary hardness of water can be removed by ________ of water.
