Match the items of Column I with items of Column II and assign the correct code.
| Column I | Column II | ||
| A | Blistered Cu | 1. | Aluminium |
| B | Blast furnace | 2. | 2Cu2O + Cu2S → 6Cu + SO2 |
| C | Reverberatory furnace | 3. | Iron |
| D | Hall-Heroult process | 4. | FeO + SiO2 → FeSiO3 |
| 5. | 2 Cu2S + 3O2 → 2Cu2O + 2SO2 | ||
Codes:
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 3 | 2 |
