10th Class General Knowledge Sample Paper General Knowledge Sample Test Paper-1

  • question_answer
    The breathing rate of a normal human being should be ______.

    A)  16-20 per minute          

    B)  16-20 per second

    C)  16-20 per hour          

    D)  16-20 per 2 second

    E)  None of these

    Correct Answer: A


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