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

  • question_answer
    The most abundant element in the Earth crust is?

    A) Oxygen            

    B) Carbon

    C) Copper             

    D) Zinc

    Correct Answer: A

    Solution :

    Oxygen tops the list in terms of abundance, with the planet's shell being composed of almost 47% of this non-metallic chemical element. Silicon posts a second-place ranking at nearly 28% by weight.


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