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प्रश्न
Explain the meaning of the terms – hard water & soft water.
स्पष्ट करा
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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
Give two examples for Efflorescent substance.
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