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 EXPEL the dissolved gases in blister copper
to BRING the impurities to SURFACE and oxidize them
to inrease the carbon content of copper
to reduce the metallic OXIDE impurities with HYDROCARBON gases liberated from the wood

Answer :D


Discussion

No Comment Found