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  1. In TIG arc welding, the welding zone is shielded by an atmosphere of

    2. A.

     Helium gas
    B.

     Argon gas
    C.

     Either (A) or (B)
    D.

     None of these

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    Workspace

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    Answer : Option C

    Explanation :

    In TIG arc welding, The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas argon or helium

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