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  1. The unit of noise pollution (level) is :

  2. A.

     Decibel

    B.

     Decimal

    C.

     Ppm

    D.

     None of these

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    Workspace

    Answer : Option A

    Explanation :

    Loudness (also called sound pressure level, or SPL) is measured in logarithmic units called decibels (dB).


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