Q. As per IS: 459-1978, the concrete mixes are designated into ?

(A) 4 grades
(B) 5 grades
(C) 6 grades
(D) 7 grades

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✅ Correct Answer: (D) 7 grades

Published by Vinay ⭐ 28.75K Points at 23-Feb-2025 04:28 pm in Concrete Technology

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