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The function of adding cryolite in the c...

The function of adding cryolite in the clectrolytic reduction of alumina by Hall–Héroult process is to

A

dissolve alumina

B

lower the melting point of alumina

C

Lower the fuel boiling point

D

increase the electrical conducitity of alumina

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Cryolite is added to alumina to lower Mp, to increase conductivity & lower the fuel bp and dissolve alumina.
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AAKASH SERIES-METALLURGY-LEVEL-II (LECTRURE SHEET) (EXERCISE-I)
  1. What are the froth stabilizers in forth floatation process

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  2. Froth flotation

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  3. The function of adding cryolite in the clectrolytic reduction of alumi...

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  4. Electrolysis method is used for the extraction of

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  5. Which of the following equation reprsents smelting process

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  6. In the extraction of which of the following metals is used for amalgam...

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  7. The flux that can be used for the removal of hasic impurities like Cou...

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  8. Chemical reduction is used in the extraction of

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  9. Bessemerisation is used in the metallurgy of

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  10. Electro-metallurgical process (electrolysis of fused electrolyte) is e...

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  11. Electrolytic reduction is used in the extraction of

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  12. Carbon is used as a common reducing agent in the extraction of

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  13. The smelting of iron in a blast furnace involves the following process...

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  14. Which of the following reaction in the blast furnaces are endothermic ...

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  15. Silver is extracted by

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  16. In the electrolysis of alumina cryolite is added to:

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  17. Which of the following metals) can be obtained by electrolysis of thei...

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  18. Electrolytic process is used for the extraction of

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  19. Which of the following contains) aluminium

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  20. Which of the following mineralores contains magnesium?

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