Which one among the following is the correct order of amount of lime (CaO), Silica (SiO₂), Alumina (AI2O3) and ferric oxide (Fe203) in Portland cement?

Question 

Which one among the following is the correct order of amount of lime (CaO), Silica (SiO), Alumina (AI2O3) and ferric oxide (Fe203) in Portland cement?

(a) CaO> SiO2 > Al₂O3> Fe₂O3

(b) SiO₂>CaO> Fe₂O3> Al₂O3

(c) Al₂O3>SiO₂>CaO> Fe₂O3

(d) Fe₂O3> Al₂O3>SiO₂> Cao

Solution

Correct Answer is: (a) CaO> SiO2 > AlO3> FeO3

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