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CSS Solved Papers
Physics Chemistry

Engineering :: Concrete Technology

  The compressive strength of an ordinary Portland cement (1 : 3 cement mortar cube) after 7 days test should not be less than
[A]. 11 N/mm2[B]. 17.5 N/mm2
[C]. 22 N/mm2[D]. 27.5 N/mm2

Answer: Option B
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