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प्रश्न
State two properties and two uses of washing soda.
उत्तर
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- Washing soda is a transparent crystalline solid.
- Washing soda is soluble in water. The solution of washing soda is alkaline and turns red litmus paper to blue.
- Washing soda is used for removing permanent hardness of water.
- It is used in the manufacture of soap, glass, paper and sodium compounds, such as borax.
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संबंधित प्रश्न
Give two important uses of washing soda.
Fill in the following blank:
Chemical formula of washing soda is ..................
Fill in the following blank:
Sodium hydrogen carbonate is .................. soda whereas sodium carbonate is ................. soda.
Write the formulae of sodium chloride and sodium carbonate.
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?
How many molecules of water of crystallisation (per formula unit) are present in:
washing soda?
Answer the following question.
How is washing soda prepared from sodium carbonate? Give its chemical equation. State the type of this salt. Name the type of hardness of water that can be removed by it?
Na2CO3.10H2O is ____________.
Chemical formula of washing soda is ____________.
Correct the wrong statement given below:
Magnesium hydroxide is used in whitewashing buildings.
