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प्रश्न
Give the common name and chemical name of an ore of:
(a) zinc (b) aluminium (c) iron.
उत्तर
| Metal | Common name | Chemical name | Formula |
| (a) Zinc | Zinc blende | Zinc sulphide | ZnS |
| (b) Aluminium | Bauxite | Aluminium oxide | Al2O3.2H2O |
| (c) Iron | Haematite | Iron [III] oxide | Fe2O3 |
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