RAJASTHAN PMT Rajasthan - PMT Solved Paper-2007

  • question_answer
    Which of the following is act as pickling agent?

    A) \[HN{{O}_{3}}\]                               

    B)        \[HCl\]

    C)        \[{{H}_{2}}S{{O}_{4}}\]                 

    D)        \[HN{{O}_{2}}\]

    Correct Answer: C

    Solution :

    \[{{H}_{2}}S{{O}_{4}}\] is act as a pickling agent. Pickling is an industrial process for removing layers of basic oxides from metals like \[Fe\] and \[Cu\] before electroplating, enamelling, galvanising and soldering.


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