Extraction of Zinc — Prelims Questions

Which of the following is the primary ore of zinc and what concentration method is typically used for it?

Which of the following reactions correctly represents the roasting of zinc blende?

During the pyrometallurgical reduction of zinc oxide with carbon, why is zinc obtained as a vapor and not as a molten liquid?

In the electrolytic refining of zinc, what are the reactions occurring at the cathode and anode, respectively?

Which of the following statements about the Ellingham diagram for zinc extraction is correct?

Which of the following impurities is typically removed from crude zinc (spelter) by fractional distillation, and why?