1.

(A): CaSO_(4) is called dead burnt gypsum because it does not set with water (R) : Mixture of 1 part of slaked lime, 3 parts of sand and water is known asmortar

Answer»

Both A and R are correct and R is the correct EXPLANATION of A.
Both A and R are correct but R is not the correct explanation of A.
A is True but R is False.
R is False but A is True. 

ANSWER :A


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