Match the items in Column I with the items in Column II and assign the correct code.
| Column I | Column II |
| A. Coloured Bands | 1. Zone refining |
| B. Impure metal to volatile complex | 2. Fractional distillation |
| C. Purification of Ge and Si | 3. Mond’s process |
| D. Purification of mercury | 4. Chromatography |
| 5. Liquation |
Codes
| A | B | C | D | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 4 | 3 | 1 | 2 |
| 3. | 3 | 4 | 2 | 1 |
| 4. | 5 | 4 | 3 | 2 |
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