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Haryana PMT Haryana PMT 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 \[28x=140\]                                                 \[x=5\]


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