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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2003

  • question_answer
    The equivalent weight of a certain trivalent element is 20. Molecular weight of its oxide is:

    A)  \[152\]             

    B)  \[56\]                

    C)  \[168\]            

    D)  \[68\]

    Correct Answer: C

    Solution :

    Atomic weight of element, M = equivalent weight \[\times \] valency \[=20\times 3\] \[=60\] Molecular formula of its oxide \[={{M}_{2}}{{O}_{3}}\] Hence, molecular weight of oxide \[=2\times 60+3\times 12\] \[=120+48\]


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