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JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank Critical Thinking

  • question_answer
    A gas mixture contains 50% helium and 50% methane by volume. What is the percent by weight of methane in the mixture [Kerala PMT 2004]

    A) 19.97%

    B) 20.05%

    C) 50%

    D) 75%

    E) 80.03%

    Correct Answer: E

    Solution :

    Solution contain \[He+C{{H}_{4}}\] Their mol. wt = \[4+16=20\] % wt of \[C{{H}_{4}}\] \[=\frac{\text{wt of }C{{H}_{4}}}{\text{Total wt}}\times 100\]\[=\frac{16}{20}\times 100=80.0%\]


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