Apart from lime, the major constituent of Portland
cement is :
(a) Alumina (b) Silica
(c) Magnesia (d) Iron oxide
Answers
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2
Answer:
silica and aluminia is your anwer because cement contains both
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(a) Alumina (b) Silica
Explanation:
Portland cement consists essentially of compounds of lime (calcium oxide, CaO) mixed with silica and alumina. The lime is obtained from a calcareous raw material, and the other oxides are derived from an argillaceous material.
Option A & B are the answers.
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