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Portland cement is so named because

  • A.the inventor's surname happened to be Portland
  • B.the raw materials were quarried at Portland
  • C.the hardened product resembled Portland stone
  • D.it was first manufactured in Portland, Maine

Answer: C

Joseph Aspdin chose the name for its resemblance to a well-regarded building stone from the Isle of Portland. It was a commercial description rather than a statement of origin. The name has outlived the comparison that prompted it by two centuries.

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