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In order to refine 'blister copper’it is...

In order to refine 'blister copper’it is melted in a furnace and is stirred with green logs of wood. The purpose is

A

to expel the dissolved gases in blister copper

B

to bring the impurities to surface and oxidize them

C

to increase the carbon content of copper

D

to reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood.

Text Solution

Verified by Experts

The correct Answer is:
D
Blister copper is purified by heating it strongly in a reverberatory furnace in presence of excess of Some of the `Cu` changes to `CuO`. This is reduced back to Cu by stirring the molten metal with g poles of wood.
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