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  1. 99.5% purity oxygen is used in

    2. A.
    cutting and welding by oxy-acetylene flame.
    B.
    hospitals for medicinal purposes.
    C.
    gas masks and artificial breathing apparatus.
    D.
    all (a), (b), and (c).

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    Workspace

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    Answer : Option D

    Explanation :

    No answer description available for this question.

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