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Railways R.R.C. (Hazipur) Solved Paper Held on 27-10-2013

  • question_answer
    Which one of the following allotropes of carbon is used in cutting and drilling?

    A) Diamond          

    B) Graphite

    C) Activated charcoal

    D)   Carbon back

    Correct Answer: A

    Solution :

    Not Available          


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