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Discussion :: Environmental Engineering

  1. A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm.

    2. A.
    1000 to 2000
    B.
    3000 to 6000
    C.
    6000 to 9000
    D.
    10000 to 100000

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    Answer : Option D

    Explanation :

    No answer description available for this question.

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