Q.

According to IS : 269 - 1976, the requirement of an ordinary Portland cement is that

A. the residue does not exceed 10% when sieved through IS sieve No. 9
B. its expansion is not more than 10 mm for unaerated cement
C. its initial setting time is not less than 30 minutes
D. all of the above
Answer» D. all of the above
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