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प्रश्न
Explain the meaning of the terms – hard water & soft water.
स्पष्ट कीजिए
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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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Removal of Hardness of Water
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संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
What do you understand by
Hard water
Differentiate between Hard & soft water with suitable examples.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Fill in the blank:
Hard and soft water can be distinguished using _____.
State the causes of hardness in water.
Give two natural sources of hard water.
What are the methods of removing hardness of water?
What is the reason for the hardness of water?
