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High purity copper is obtained by...

High purity copper is obtained by

A

Zone refining

B

Poling

C

Electrolytic refining

D

Cupelling

Text Solution

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The correct Answer is:
C
After electrlytic refining. Purity of copper is `99.99%` which is enough for electrical applications.
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ALLEN-METALLURGY-EXERCISE-05 [B]
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  2. When the ore haematite is burnt in air with coke around 2000 K along w...

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  5. Write down the reactions involved in the extraction of Pb. What of the...

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  6. The chemical process in the production of steel from haematite ore inv...

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  7. Electrolytic reduction of alumina to aluminum by the Hall-Heroult pro...

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  8. The chemical composition of slag formed during the smelting process in...

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  9. Which of the following process is used in the extractive metallurgy of...

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  10. In the process of extraction of gold, Roasted gold ore +CN^(-)+H2Oov...

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  11. The method chiefly used for the extraction of lead and tin from there ...

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  12. Which ore contains both iron and copper?

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  13. A(1) and A(2) are two ores of metal M.A(1) on calcination gives a blac...

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  14. Match the column :

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  15. Extraction of iron from zine blende is achieved by

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  16. Match the column:

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  18. Copper is the most noble of first row transition metals and occurs in ...

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  19. Copper is the most noble of first row transition metals and occurs in ...

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  20. Copper is the most noble of first row transition metals and occurs in ...

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  21. Extraction of metal from the ore cassiterite involves

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