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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Q: 25 (IAS/2013)
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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question_subject: 

Science

question_exam: 

IAS

stats: 

0,79,101,22,46,33,79

keywords: 

{'muscles': [1, 0, 0, 1], 'minerals': [1, 0, 2, 6], 'calcium': [2, 0, 0, 4], 'human body': [40, 2, 44, 29], 'sodium': [10, 2, 12, 23], 'iron': [0, 0, 1, 1], 'contraction': [0, 0, 0, 2]}