7.What is the differences between smelting and bessemerisation process of copper

Q. Which process is used in smelting during metallurgy of copper?

Q. The chemical composition of 'slag' formed during the smelting process in the extraction of copper is:

Q. Identify the reaction that doesn't take place during the smelting process of copper extraction.

Q. In the bessemerisation of sulphide ore of copper, there is self-reduction giving copper metal.
If true enter 1, else enter 0.