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Q: According to IS 456 : 2000, the minimum grade of concrete required for plain concrete and reinforced cement concrete works, under exposure condition "very severe" are _____ and ____ respectively.
  • A. M15, M40
  • B. M10, M25
  • C. M20, M35
  • D. M25, M40
Correct Answer: Option C -
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Explanations:

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