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      Question

      What is the primary source of silicon in soil

      minerals?
      A Feldspar Correct Answer Incorrect Answer
      B Quartz Correct Answer Incorrect Answer
      C Mica Correct Answer Incorrect Answer
      D Amphibole Correct Answer Incorrect Answer

      Solution

      Quartz (SiOβ‚‚) is a primary mineral and major source of silicon. Feldspar and mica also contain silicon but in compounds.

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