JEE Main 202227 Jul, Evening shiftChemistryMediumIsolation of Elements99× since 2002
Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if iron is _____________.