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प्रश्न
Write any five uses of salts.
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उत्तर
Common Salt (NaCl): It is used in our daily food and used as a preservative.
1. Washing Soda (Sodium Carbonate):
- It is used in softening hard water.
- It is used in glass, soap and paper industries.
2. Baking Soda (Sodium bicarbonate -NaHC03):
- It is used in making of baking powder which is a mixture of baking soda and tartaric acid.
- It is used in soda-acid fire extinguishers.
- Baking powder is used to make cakes and bread, soft and spongy.
- It neutralizes excess acid in the stomach and provides relief.
3. Bleaching powder (Calcium Oxychloride – CaOCl2)
- It is used as disinfectant.
- It is used in textile industry for bleaching cotton and linen.
4. Plaster of Paris (Calcium Sulphate Hemihydrate – CaS04 . 1/2H20)
- It is used for plastering bones
- It is used for making casts for statues
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संबंधित प्रश्न
Complete and balance the following chemical equation:
\[\ce{NaCl_{(aq)} + H2O_{(l)} ->[Electricity]}\]
Explain why chlorine is used for sterilising drinking water supply.
The number of molecules of water of crystallisation present in washing soda crystals is ______.
Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
Name two carbonates which do not produce carbon dioxide on heating.
Name the anion present in the following compound:
Compound A, when warmed with concentrated sulphuric acid, gives a gas which fumes in moist air and which gives dense white fumes with ammonia.
Distinguish by a chemical test sodium chloride and sodium sulphide.
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
One of the constituents of baking powder is sodium hydrogencarbonate. The other constituent is :
