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प्रश्न
What is meant by saying that washing soda has detergent properties?
उत्तर
By saying that washing soda has detergent properties, or cleansing properties, one means that it can remove dirt and grease from dirty clothes, etc. It attacks dirt and grease to form water-soluble products, which are washed away on rinsing with water.
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संबंधित प्रश्न
Name a metal carbonate which is soluble in water.
Fill in the following blank:
Sodium hydrogen carbonate is .................. soda whereas sodium carbonate is ................. soda.
State two properties and two uses of washing soda.
What is meant by "water of crystallisation" in a substance? Explain with an example.
Describe how washing soda is produced starting from sodium chloride (common salt). Write equations of all the reactions involved.
Consider the following substances:
NaCl, Ca(OH)2, NaHCO3, NH3, Na2CO3, H2O, Cl2, CO2, CaSO4.2H2O, 2CaSO4.H2O, CaOCl2
Which four substances are utilised in the production of washing soda?
The number of molecules of water of crystallization in washing soda is ______.
Correct the mistakes:
- Washing soda is used for making cakes and bread soft, spongy.
- Calcium sulphate hemihydrate is used in textile industry for bleaching cloths.
Na2CO3.10H2O is ____________.
The name of the salt used to remove permanent hardness of water is ______.
