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प्रश्न
Give two examples of hydrated substances.
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उत्तर
- Washing soda (Na2CO3.10H2O)
- Gypsum (CaSO4.2H2O)
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संबंधित प्रश्न
What is the effect on boiling point of water when impurity is added.
Give two examples for Efflorescent substance.
What do you observe when Washing soda is exposed to air ?
Name the compound responsible for permanent hardness of water.
Suggest one method for the removal along with the reaction for temporary hardness.
State the disadvantages of using hard water.
Give balanced equation to show how temporary hardness enters into water.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
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 _____.
