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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

  • question_answer
    Which of the following substances consists of only one element?

    A)  Marble                               

    B)  Sand

    C)  Diamond                            

    D)  Glass

    Correct Answer: C

    Solution :

    Each carbon atom of diamond is linked to four other carbon atoms by sigma bond. The octet of each carbon atom is complete so, diamond consists of only one type element. Marble \[-CaC{{O}_{3}}\] sand \[-Si{{O}_{2}},\] Glass. It is a mixture of \[Na\] and \[Ca\] silicate


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