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VMMC VMMC Medical Solved Paper-2006

  • question_answer
    A gas is found to have a formula \[{{[CO]}_{x}}.\] If its vapour density is 70, the value of \[x\] is :

    A)  2.5                                        

    B)         3.0                        

    C)         5.0                                        

    D)         6.0

    Correct Answer: C

    Solution :

    Molecular weight \[=2\times \]vapour density \[=2\times 70=140\]                 \[\therefore \]  \[{{(CO)}_{x}}=140\]                 or            \[{{(12+16)}_{x}}=140\]                 or            \[28x=140\]                 \[\therefore \]  \[x=5\]


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