ह्रदय की धड़कन को नियंत्रि – McqOptions

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1.	ह्रदय की धड़कन को नियंत्रित करने के लिए निम्न में से कौन सा खनिज आवश्यक है -
A.	सोडियम
B.	गंधक
C.	पोटैशियम
D.	लोहा
Answer» D. लोहा

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