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    Question

    When diamond is heated at more than 1500 Degree Celsius

    in the absence of air, then it turns to………….?
    A Coal Correct Answer Incorrect Answer
    B Carbondioxide Correct Answer Incorrect Answer
    C Fullerene Correct Answer Incorrect Answer
    D Graphite Correct Answer Incorrect Answer

    Solution

    Diamond is a crystal modification of carbon. Heating diamond to about 900 degrees Celsius in the presence of air, diamond will burn into COâ‚‚ whereas heating it to 1500 degrees C in the absence of air, it turns into graphite.

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