Which metal is extracted from calamine ore?

60 In the electrolytic refining of a metal M, what would you take as anode, cathode and electrolyte? 60 Name any five metals which are purified by electrolytic refining method. 61 Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula. 61 How is copper extracted from its sulphide ore (copper glance), Cu₂S? Explain with equations of the reactions involved.