Match Column I with Column II
| Column I | Column II |
| A. Bistered Cu | 1. Aluminium |
| B. Blast furnace | 2. Cu2O + Cu2S → 6Cu + SO2 |
| C. Reverberatory furnace | 3. Iron |
| D. Hall-Heroult process | 4. FeO + SiO2 → FeSiO3 |
Answer & explanation
Correct answer: option 2
- Cu2O + Cu2S → 6Cu + SO2
The solidified copper obtained has blistered appearance due to the evolution of SO2 and so it is called blister copper. - Iron is extracted from blast furnace.
- The ore is heated in a reverberatory furnace of after mixing with silica. In the furnace, iron oxide slags of as iron silicate and copper is produced in the form of copper matte.
- Hall-Heroult process single is used for the extraction of Al.