1.

Portland cement contains 'X' to enhance the setting time. What is 'X'?(A) CaSO4. 1/2 H2O(B) CaSO4.2H2O(C) CaSO4(D) CaCO3

Answer»

Correct option is (B) CaSO4.2H2O

Gypsum (CaSO4.2H2O) is used to enhance setting time in portland cement.



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