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Zone refining is a method to obtain...

Zone refining is a method to obtain

A

Very high temperature

B

Ultrapure Al

C

Ultrapure metals

D

Ultrapure oxide

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The correct Answer is:
C
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Zone refining is used to obtain metals in high degree of purity. During electrorefining pure metal is liberated at the cathode.

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NIKITA PUBLICATION-GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS-Multiple choice questions
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  2. The main function of roasting is

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  3. Zone refining is a method to obtain

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  4. Van Arkel method of purification of metals involves converting the met...

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  5. Electrolytic reduction method is used fro the extraction of

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  6. When copper is placed in the atmosphere for sufficient time, a green c...

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  7. Roasting of copper pyrites is done

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  8. In the metallurgy of iron, when limestone is added to the blast furnac...

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  9. The slag obtained during the extraction of copper from coper pyrites i...

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  10. Copper matte consists of:-

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  11. Which method is based on distribution principle?

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  12. Which statement about corrosive sublimate is incorrect ?

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  13. Iron is obtained on large scale from haematite Fe(2)O(3)

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  14. Polling process us used in the purification of

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  15. Spelter is

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  16. Roasting is used during metallurgical operation using

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  17. Pig iron is converted into strrl by decreasing the amount of carbon pr...

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  18. Near the top of the blast furnace, iron oxides are reduced to …… by ca...

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  19. Hoop's process of purification of aluminium involves formation of laye...

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  20. During electrorefining of a metal, impure metal is made anode.

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