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J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    A unit cell with edge length \[a\ne b\ne c\]and axial angles \[\alpha =\beta =\gamma ={{90}^{o}}\]is called

    A)  cubic              

    B)  tetragonal

    C)  orthorhombic       

    D)  hexagonal

    Correct Answer: C

    Solution :

     A unit cell with edge length \[a\ne b\ne c\] and axial angles\[\alpha =\beta =\gamma ={{90}^{o}}\]is called ortho rhombic. E.g. rhombic sulphur, \[\text{KN}{{\text{O}}_{\text{3}}}\]and \[\text{BaS}{{\text{O}}_{\text{4}}}\text{.}\]


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