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Railways R.R.C. (Allahabad) Solved Paper 2nd Shift Held on 1-12-2013

  • question_answer
    The surface of a lake is frozen in severe winter but the water at its bottom is still liquid. What is the reason?

    A) Miracle

    B) The density of water is maximum at 4° centigrade

    C) Ice is a bad conductor of heat

    D) None of the above

    Correct Answer: B

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