Write 2 steps involved the extraction of impure of copper
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Explanation:
Copper is mainly found in the form of Sulphide and Carbonate ore.
Extraction of Sulphide ore: (Roasting)
Cu2S + O2 ------> Cu2O + SO2
Cu2O + Zn ------> 2Cu+ ZnO
Extraction of Carbonate ore: (Calcination)
CuCO3 ------> CuO + CO2
CuO + Zn ------> Cu + ZnO
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