BCECE Engineering BCECE Engineering Solved Paper-2004

  • question_answer
    A gas has a vapour density 11.2. The volume occupied by \[\lg \]of the gas at NTP is:

    A) 1 L                          

    B)        11.2 L    

    C)        22.4 L                    

    D)        4 L

    Correct Answer: A

    Solution :

    Key Idea: (i) Molecular weight \[=2\text{ }\times \]vapour density (ii) Molecular weight in gram \[=22.4\,L\] at STP Given vapour density \[=11.2\] Molecular weight \[=2\text{ }\times \text{ }11.2=22.4\] \[\therefore \] 22.4 g of gas occupies \[\text{=}\,\text{22}\text{.4 L}\]at STP \[\therefore \]1 g of gas occupies \[=\frac{22.4}{22.4}\times 1\]                                 \[=1\,L\]at STP


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