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Q: Select the incorrect pair from following
  • A. Soundness of cement- is measured by Le- chatelier method.
  • B. Fineness of cement - is measured in terms specific surface in cm² / gram.
  • C. For initial and final setting time –Vicat’s apparatus is used.
  • D. For initial setting time - 5 mm² annular collar is used.
Correct Answer: Option D -
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Explanations:

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