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Ruby : Red : : Sapphire : ?

  • A.Blue
  • B.White
  • C.Green
  • D.Silver

Answer: A

Correct answer: Blue

The relation is gemstone : its characteristic colour. A ruby is red; a sapphire is blue. Both are corundum, and it is the trace impurity - chromium in one, iron and titanium in the other - that decides the colour.

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