Question

Four main oxides present in ordinary portland cement are : CaO, $A{l}_2{O}_3$, $Si{O}_2$ and $F{e}_2{O}_3$. Identify the correct ascending order of their proportions in a typical composition of OPC.

• A. $A{l}_2{O}_3,F{e}_2{O}_3,CaO,Si{O}_2$
• B. $A{l}_2{O}_3,CaO,F{e}_2{O}_3,Si{O}_2$
• C. $F{e}_2{O}_3,A{l}_2{O}_3,Si{O}_2,CaO$
• D. $F{e}_2,O_3,Si{O}_2,A{l}_2{O}_3,CaO$

Answer 1

The correct option is C $F{e}_2{O}_3,A{l}_2{O}_3,Si{O}_2,CaO$

(c)