Which method/process is used to obtain pure alumina from bauxite?

During the extraction of metals,electrolytic refining is used to obtain pure metals.
$(a)$ Which material will be used as the anode and cathode for the refining of silver metal by this process?
$(b)$ Suggest a suitable electrolyte as well.
$(c)$ In this electrolytic cell,where do we get pure silver after passing an electric current?

Solder is an alloy of lead and tin. It has a:

What is the position of hydrogen in the periodic table?

Which of the following gases is insoluble in water?

During the electrolytic refining of zinc,it gets :