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Question
Which of the ores mentioned can be concentrated by magnetic separation method?
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Solution
If the ore or the gangue can be attracted by the magnetic field, then the ore can be concentrated by the process of magnetic separation. Among the ores mentioned in table 6.1, the ores of iron such as haematite (Fe2O3), magnetite (Fe3O4), siderite (FeCO3), and iron pyrites (FeS2) can be separated by the process of magnetic separation.
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(i) \[\ce{CaCo3 -> CaO + CO2}\]
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(i) \[\ce{Fe2O3 + 3CO -> 2Fe + 3CO2}\]
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Native silver metal forms a water solution complex with dilute solution of Na CN in the presence of
Match List I with List II.
| List - I | List - II | ||
| a. | Siderite | I. | FeCO3 |
| b. | Malachite | II. | CuCO3 · Cu(OH)2 |
| c. | Sphalerite | III. | ZnS |
| d. | Calamine | IV. | ZnCO3 |
Choose the correct answer from the option given below.
