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  1. Which is best used as a sound absorbing material in partition walls ?

  2. A.

     Stone chips

    B.

     Steel

    C.

     Glass - wool

    D.

     Glass pieces

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    Answer : Option C

    Explanation :

    Glass wool is best used as a sound absorbing material in partition walls. This is so because glass wool do not transfer mechanical energy. These tend to be soft, flexible, low density, and with high surface area to linear area ratios.


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