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NEET Biology Body Fluids and Circulation / शरीर के तरल पदार्थ और परिसंचरण Question Bank Self Evaluation Test - Body Fluids and Circulation

  • question_answer
    PR interval in a normal ECG, at heart beat of 70/min is approximately:

    A) 180ms                                      

    B) 80ms

    C) 8ms                                         

    D) 320ms

    Correct Answer: A

    Solution :

    [a] Not Available


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