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प्रश्न
What do you observe when Washing soda is exposed to air ?
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उत्तर
Washing soda (Na2CO3.10H2O) is a white crystalline substance and on exposure to air it gets changed to white powder.
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संबंधित प्रश्न
What do you understand by
Soft water
What do you understand by
Hard water
What are the advantages of hard water.
Explain with equation, what is noticed when permanent hard water is treated with Washing soda.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you prove the advantage of detergent over soap.
Explain the meaning of the terms – hard water & soft water.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
