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प्रश्न
What do you observe when Washing soda is exposed to air ?
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
Give reason for It is difficult to cook in hills compared to plain.
Name the compound responsible for temporary hardness.
Suggest one method for the removal along with the reaction for permanent hardness of water.
What do you understand by
Soft water
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
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 distinguish between hard and soft water?
Explain the meaning of the terms – hard water & soft water.
Permanent hardness of water is due to the presence of _______.
What is the reason for the hardness of water?
