Chemistry - Metallurgy Question with Solution | TestHub

Red bauxite is purified by leaching (Bayer's process) to obtain alumina, which is then electrolytically reduced. Copper pyrites undergoes froth flotation, then roasting and self-reduction. Calamine (ZnCO₃) is calcined and then reduced by carbon. Magnetite (Fe₃O₄) is reduced by carbon in a blast furnace.