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  4. Ecology And Environment

SSC Ecology And Environment Sample Paper NCERT Sample Paper-3

  • question_answer
    A Inhabitants close to very busy airports are likely to experience health hazards R. Sound level of jet airplanes usually exceeds 150 db

    A)  A is correct and R is its explanation

    B)  A is correct and R is not its explanation

    C)  A is correct and R is wrong

    D)  A is wrong and R is correct

    Correct Answer: A

    Solution :

    [a] Prolonged exposure to noise level above 80 dB (decibel) gradually leads to permanent loss of hearing ability. Therefore sound above 80 dB level is considered to be a hazardous noise pollution.


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