Approximately, how many times each day do our heart valves open and close normally...? Mcqs

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Approximately, how many times each day do our heart valves open and close normally...?

(A) 10,000

(B) 1,00,000

(C) 1,50,000

(D) 2,00,000

✅ Correct Answer: 1,00,000

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Source: This question is taken from the Everyday Science

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