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civil engineering building materials
1. The slag which floats on the surface of the molten iron generally contains
(A): all the above.
(B): Alumina (Al2O3) 12%
(C): Lime (CaO) 45%
(D): MgO, CaSO4, KMnO2 and FeO 8%
(E): Silica (SiO2) 35%
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