NEET Biology Human Reproduction Question Bank Pollution

  • question_answer
    What is the intensity of sound in normal conversation [CBSE PMT 2001]

    A) 10-20 dB

    B) 40-60 dB

    C) 90-120 dB

    D) 120-150 dB

    Correct Answer: B

    Solution :

    Not Available


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