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      Question

      Deficiency of which of the following elements is

      responsible for weakening of bones? 1. Calcium  2. Phosphorus 3. Nitrogen 4. Carbon Select the correct answer using the codes given below
      A 1 and 2 Correct Answer Incorrect Answer
      B Only 1 Correct Answer Incorrect Answer
      C 1, 2 and 3 Correct Answer Incorrect Answer
      D Only 4 Correct Answer Incorrect Answer

      Solution

      Deficiency of calcium causes weakening of bones because bone consists of calcium and phosphate both.

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