Q. Pick up the correct statement from the following: (Solved)
1. Roasting is not necessary if iron ore is an oxide
2. Impurities float on the molten iron as slag
3. The slag contains lime about 45%
4. All the above
- d. All the above
1. Roasting is not necessary if iron ore is an oxide
2. Impurities float on the molten iron as slag
3. The slag contains lime about 45%
4. All the above