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JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Question Bank Mock Test - Solid State

  • question_answer
    In orthorhombic, the value of a, b and c are respectively 4.2\[\overset{\text{o}}{\mathop{\text{A}}}\,\], 8.6\[\overset{\text{o}}{\mathop{\text{A}}}\,\] and 8.3\[\overset{\text{o}}{\mathop{\text{A}}}\,\]. Given the molecular mass off solute is 155 gm \[mo{{l}^{-1}}\] and that of density is 3.3 g/cc, the number of formula units per unit cell is

    A) 2                     

    B) 3

    C) 4         

    D) 6

    Correct Answer: C

    Solution :

    [c] \[Z=\frac{V\times {{N}_{A}}\times d}{M}\] \[=\frac{4.2\times 8.6\times 8.3\times {{10}^{-24}}\times 6.023\times {{10}^{23}}\times 3.3}{155}\] \[=3.84=4\]


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