1.

Cement mainly contains

A. CaO, SiO₂, Al2O₃
B. MgO, SiO₂, K₂O
C. Al2O₃, MgO, FE₂O₃
D. CaO, MgO, K₂O
Answer» B. MgO, SiO₂, K₂O


Discussion

No Comment Found

Related MCQs