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| Q.80 | In concrete mix design of M40 grade concrete, assuming the standard deviation value of characteristic strength of concrete as in IS 456:2000, the target mean strength of concrete mix (in N/mm2 units) is expected is : | |
| Ans | A. 47.5 | |
| B. 48. 25 | ||
| C. 50 | ||
| D. 46.25 |
Correct Ans Provided: B
