1.

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

Answer»

to increase the carbon content of copper.
to bring the impurities to SURFACE and oxidize them.
to reduce the metallic OXIDE impurities with HYDROCARBON gasses liberated from the wood.
to expel the dissolved gases in blister copper.

Answer :C


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