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UPSC CSE Prelims
2013
Q50 — Science & Technology

UPSC CSE Prelims 2013 Q50 — Science & Technology PYQ with Answer

2013Q50·Science & Technology·Biology

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?

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