The ore of aluminium is (UP CPMT 2013)

(a) Carnalite KCl.MgCl₂.6H₂O (b) Malachite CuCO₃.Cu(OH)₂ (c) Galena PbS (d) Bauxite Al₂O₃.2H₂O Ore of aluminium is bauxite. 36. Metals are usually not found as nitrates in their ores’. Out of the following two (a and b) reasons which is/are true for the above observation? (NEET 2015) . (1) Metal nitrates are highly unstable. (2) Metal nitrates are highly soluble in water. (a) (1) and (2) are false (b) (1) is false but (2) is true (c) (1) is true but (2) is false (d) (1) and (2) are true The metal nitrates are soluble. Thus, not many metals are found from their nitrate ores.