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Railways R.R.C. (Delhi) Solved Paper Held on 1st Shift 2-11-2014

  • question_answer
    'Hg' is symbol of which one of the element?

    A) None of these    

    B) Helium

    C) Hydrogen                      

    D) Mercury

    Correct Answer: D

    Solution :

    Mercury is a chemical element with symbol Hg and atomic number 80.                        


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