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प्रश्न
Give two examples for Efflorescent substance.
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उत्तर
Washing soda and glauber’s salt (Na2SO4.10 H2O)
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संबंधित प्रश्न
What do you observe when Washing soda is exposed to air ?
Suggest one method for the removal along with the reaction for permanent hardness of water.
What are the advantages of soft 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.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between hard and soft water?
Explain the meaning of the terms – hard water & soft water.
Two samples of water are placed in a beaker individually. State how you will determine experimentally which of the two samples contains permanent hard water.
What are the methods of removing hardness of water?
