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प्रश्न
What do you understand by
Hard water
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उत्तर
Water is said to be hard when it does not readily form lather with soap.
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संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
Name the compound responsible for temporary hardness.
What do you understand by
Soft water
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Explain the meaning of the terms – hard water & soft water.
Give two natural sources of hard 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.
Permanent hardness of water is due to the presence of _______.
Temporary hardness of water can be removed by ________ of water.
Temporary hardness of water can be removed by
