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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