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Haryana PMT Haryana PMT Solved Paper-2006

  • question_answer
    A gas is found to have the formula \[{{(CO)}_{n}}\]. If its vapour density is 56, the value of n will be:

    A)  \[7\]                                    

    B)  \[5\]

    C)  \[4\]                                    

    D)  \[3\]

    Correct Answer: C

    Solution :

                    Mol. wt. \[=2\times 56\] \[=112\] \[{{(CO)}_{n}}=112\] \[{{(12+16)}_{n}}=112\] \[{{(28)}_{n}}=112\] \[n=\frac{112}{28}=4\]


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