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Quartz : Radio : : Gypsum : ?

  • A.Glass
  • B.Porcelain
  • C.Cement
  • D.Powder

Answer: B

Correct answer: Cement

The relation is mineral : the industry that consumes it. Quartz crystals set the frequency in a radio; gypsum is ground into plaster and added to cement, where it retards the setting. Porcelain is made from kaolin and feldspar.

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