b. Prelims Paper (GS) Paper – 1

(UPSC 2013) 50. Consider the following minerals

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    Shashank Madhukar
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    50. Consider the following minerals

    1. Calcium

    2. Iron

    3. Sodium

     

    Which of the minerals given above is/are required by human body for the contraction of muscles?

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

     

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