Bauxite is an ore of Aluminium from which Aluminium metal is extracted. It is represented by the chemical formula Al 2 O 3 . x H 2 O . Regards
(a) Give the chemical names and formulae of main ores of (i) aluminium (ii) iron (iii) zinc.
(b) Which impurities are present in bauxite.
(c) What is red mud, how is it removed?