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JEE Main202227 Jul 2022Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

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

Correct answer

4

Step-by-step solution

Siderite: FeCO 3 Malachite: CuCO 3 . Cu OH 2 Magnetite: Fe 3 O 4 Haematite: Fe 2 O 3 Cryolite: Na 3 AlF 6 Cuprite: Cu 2 O Limonite: FeO OH . nH 2 O Kaolinite: Al 2 OH 4 Si 2 O 5 Sphalerite: ZnS Bauxite: AlO x OH 3 - 2 x So, as we can see that among the given options 4 ores (Siderite, magnetite, Haematite, Limonite) contain iron.

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