Railways R.R.C. (Hajipur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer
    Which of the following is not an allotrope of carbon?

    A) Charcoal                       

    B) Diamond

    C) Granite             

    D) Graphite

    Correct Answer: C

    Solution :

    Carbon has various allotropic forms but these can be classified into crystalline form (diamond, graphite) and amorphous form (coke, coal, lamp black, animal charcoal, gas carbon, wood charcoal etc.)


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