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प्रश्न
State two uses each of the following compounds:
Hydrogen
उत्तर
Hydrogen:
(i) It is used in the hydrogenation of oils to obtain solid fats called vegetable ghee.
(ii) Liquid hydrogen is used as a fuel for rockets.
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संबंधित प्रश्न
Name the sodium compound which is used for softening hard water.
Give two important uses of washing soda.
Name the metal whose carbonate is known as washing soda.
What is washing soda?
Explain why an aqueous solution of sodium chloride is neutral but an aqueous solution of sodium carbonate is basic (or alkaline). Write chemical equations of the reactions involved.
Describe how washing soda is produced starting from sodium chloride (common salt). Write equations of all the reactions involved.
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.
Chemical formula of washing soda is ____________.
Correct the wrong statement given below:
Magnesium hydroxide is used in whitewashing buildings.
