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Copper and tin are refined by:...

Copper and tin are refined by:

A

liquation

B

cupellation

C

bessemerisation

D

Poling

Text Solution

Verified by Experts

The correct Answer is:
D
This process is used for the purification of copper and tin to remove the impurities of their oxides.
Green wood `rarr`Hydrocarbons `rarr CH_(4)`,
`4CuO +CH_(4) rarr 4CU`(pure metal) `+CO_(2) +2H_(2)O`
Green wood `rarr` Hydrocarbon `rarr CH_(4)`,
`2SnO_(2) + CH_(4) rarr 2Sn +CO_(2) +2H_(2)O`
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A2Z-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS-Metallurgy Of Cu, Fe, Ag, Al, Zn, And Au
  1. In smelting the furnace most suitable is

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  2. Flux added in the extraction of iron is

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  3. Copper and tin are refined by:

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  4. In the manufacture of iron from haematile, the limestone acts as a

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  5. Blister copper is:

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

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  7. Tin and zinc can be refined by:

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  8. Complex is formed in the extraction of

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  9. Ag(2)S +NaCN rarr (a) (a) +Zn rarr (d) (b) is a metal. Hence (a) a...

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  10. Which of the following metal is extracted by amalgamation process?

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  11. Leaching of Ag(2)S is carried out by heating it with a dilute solution...

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  12. The reaction 2ZnS +3O(2) rarr2ZnO +2SO(2) in the metallurgical process...

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  13. In Mac Arthur Forest method, silver is extracted from the solution of ...

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  14. In blast furnace, the highest temperature is in

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  15. In which of the following pair of metals, both are commerically extrac...

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  16. During extraction of Fe, slag obtained is

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  17. Silver from argentiferous lead is obtained by

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  18. The final step for the extraction of copper from copper pyrite in Bess...

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  19. Purpose of coke in the blast furnace is

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  20. How is limestone used in Fe extraction?

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