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Q. |
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» D. All the above |
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