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In Down's Process, for manufacture of so...

In Down's Process, for manufacture of sodium metals, `CaCl_(2)` is added to NaCl in order to

A

Improve the electrical conduction

B

Increase the temperature of electrolysis

C

Bring down the melting temperature

D

Stabilize the metallic sodium

Text Solution

Verified by Experts

The correct Answer is:
C
`CaCl_(2)` brings down the melting temperature from `1075K` to `850K`.
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A2Z-S BLOCK ELEMENTS ( GROUP 13 - 14)-Compound Of Alkali Metals
  1. On heating sodium carbonate, and CO(2) are formed.

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  2. Which of the following is known as soda ash?

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  3. In Down's Process, for manufacture of sodium metals, CaCl(2) is added ...

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  4. The pair of compounds which can exist together in aqueous solution is

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  5. What would your observe if excess of dilute NaOH solution is added and...

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  6. Sodium dichormate on heating with coke yields :

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  7. Sodium thiosulphate, Na(2)S(2)O(3).5H(2)O is used in photography to

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  8. Which one out of the NaOH and KOH is a better absorber of CO(2) ?

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  9. In which of the following precesses, fused sodium hydroxide is electro...

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  10. Which of the following is neither deliquescent nor efflorscent and is ...

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  11. In the Castner's process for the extration of sodium, the anode is mad...

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  12. In Down's cell (for production of sodium), graphite anode is used beca...

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  13. At higher temperature sodium metal reacts with alumina to give a sodiu...

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  14. Sodium carbonate can be manufactured by Solvay's process but potassium...

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  15. What products are formed during the electrolysis of a of a concentrat...

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  16. Causticisation process is used for the preparation of

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  17. When NaOH crystals are left in open air, they acquire a fluid layer ar...

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  18. Which of the following is true ?

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  19. Based on lattice energy and other considerations, which one of the fol...

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  20. When washing soda is heated.

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