MCQOPTIONS
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| 1. |
The slag which floats on the surface of the molten iron generally contains |
| A. | Lime (CaO) 45% |
| B. | Silica (SiO2) 35% |
| C. | Alumina (Al2O3) 12% and MgO, CaSO4, KMnO2 and FeO 8% |
| D. | All the above |
| Answer» E. | |