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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry

  • question_answer
    15 grams of methyl alcohol is dissolved grams of water. What is the mass percent methyl alcohol in solution?

    A) 30%

    B) 50%

    C) 70%

    D) 75%

    Correct Answer: A

    Solution :

    [a] Total mass of solution = (15 + 35) gram = 50 gram
    Mass percentage of methyl alcohol
    \[=\frac{\text{Mass of methyl alcohol}}{\text{Mass of solution}}\times 100\]
    \[=\frac{15}{50}\times 100=30%\]


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