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Mr. Dubey • 100.64K Points
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Q. Some of the mineral elements required in extremely small quantities (traces) are called microelements. Group of such elements are

  • (A) copper, zinc, magnesium, iron and sulfur
  • (B) zinc, copper, manganese, molybdenum and boron
  • (C) molybdenum, boron, zinc, magnesium and calcium
  • (D) manganese, zinc, iron, boron and calcium
  • Correct Answer - Option(B)
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  • Filed under category Chemistry

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