2. Sample Papers
  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-14

  • question_answer
    The average breathing rate in an adult human being at rest is:

    A) 12 - 15 times per minute

    B) 15 - 18 times per minute

    C) 18 - 21 times per minute

    D) 21 - 24 times per minute

    E) None of these

    Correct Answer: B

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