Advertisements
Advertisements
प्रश्न
The number of molecules of water of crystallization in washing soda is ______.
उत्तर
The number of molecules of water crystallization in washing soda is 10.
APPEARS IN
संबंधित प्रश्न
Give two important uses of washing soda.
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.
Write the formulae of sodium chloride and sodium carbonate.
What is meant by "water of crystallisation" in a substance? Explain with an example.
Name a sodium compound which is used for making borax and glass.
State two uses each of the following compounds:
Hydrogen
Describe how washing soda is produced starting from sodium chloride (common salt). Write equations of all the reactions involved.
State whether an aqueous solution of washing soda is acidic or alkaline? Give reason for your answer.
Write the name and formula of one salt each which contains:
ten molecules of water of crystallisation
Give a scientific explanation.
The hard water of a well becomes soft on adding washing soda to it.
Write the chemical formula.
Washing soda
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.
Chemical formula of washing soda is ____________.
Correct the wrong statement given below:
Magnesium hydroxide is used in whitewashing buildings.
The name of the salt used to remove permanent hardness of water is ______.
