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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2009

  • question_answer
        Nitrogen can exists in two forms which are correct about them? (i) \[\alpha -\]nitrogen with cubic crystalline structure (ii)\[\beta -\]nitrogen with cubic crystalline structure (iii)\[\beta -\]nitrogen with hexagonal crystalline structure

    A)  Both (i) and (iii)               

    B)  Both (i) and (ii)

    C)  Both (ii) and (iii)              

    D)  None of these

    Correct Answer: A

    Solution :

                    VA group element show allotropy. Solid nitrogen exists in two forms (i)\[\alpha -\]nitrogen with cubic crystalline structure (ii)\[\beta -\] nitrogen with hexagonal crystalline structure.


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