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Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if (of) iron is _____. |
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Answer» Correct answer is 4. Bauxite — AlOX(OH)3–2x(where 0 < x < 1) ✓ Siderite — FeCO3 Cuprite — Cu2O Calamine — ZnCO3 ✓ Haematite — Fe2O3 Kaolinite — Al2(OH)4Si2O5 Malachite — CuCO3 . Cu(OH)2 ✓ Magnetite — Fe3O4 Sphalerite — ZnS ✓ Limonite — Fe2O3.3H2O Cryolite — Na3AlF6 |
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