Which Ore Contains Both Iron And Copper?

In metallurgy of iron, when lime stone is added to the blast furnace, the calcium ion ends up in

 In the alumino-thermite process, aluminium acts as

The major role of fluorspar (CaF₂) which is added in small amount in the electrolytic reduction of alumina dissolved in fused cryolite (Na₃AlF₆) is

 In the commercial electrochemical process for aluminum extraction, the electrolyte used is

The chemical process in the production of steel from haematite ore involve

Which of the following process is used in extractive metallurgy of magnesium?

Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of

Of the following, the metals that cannot be obtained by electrolysis of the aqueous solution of their salts are