Question

55. Alumina in excess causes
(A) Reduces the strength of the cement
(B) Inceases the strength of the cement
(C) No change
(D) Sometimes increase or decrease the strength of the ceme​

Answer 1

Option (a) is correct

Explanation:Alumina supports to set quickly to the cement. It also lowers the clinkering temperature. Alumina in excess reduces the strength of the cement.

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Answer 2

A) reduses the strenght of the cemet