Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if (of) iron is ______

Question

Accepted Answer

Correct answer: 4. (4) Bauxites - AlO_x(OH)_3-2x (where 0 < x < 1) √Siderite — FeCO_3 Cuprite — Cu_2O Calamine — ZnCO_3 √ Haematite— Fe_2O_3 Kaolmite — Al_2(OH)_4Si_2O_5 Malachite — CuCO_3. Cu(OH)_2 √Magnetite — Fe_3O_4 Sphalerite — ZnS √Limonite — Fe_2O_3.3H_2O Cryolite — Na_3AlF_6

$Among the following ores Bauxite, Siderite, Cuprite, Calamine, Haematite, Kaolinite, Malachite, Magnetite, Sphalerite, Limonite, Cryolite, the number of principal ores if (of) iron is ______$

Solution

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