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  3. 9th Class
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  5. Atoms and Molecules

9th Class Science Atoms and Molecules Question Bank Atoms and Molecules

  • question_answer
    Direction: Observe the given flow chart and answer the following question.
    What are a and b?
     
     

    A) a = multiply by 22.4 L, b = multiply by 22.4 L

    B) a = multiply by 22.4 L, b = divide by 22.4 L

    C) a = divide by 22.4 L, b = divide by 22.4 L

    D) a = divide by 22.4 L, b = multiply by 22.4 L

    Correct Answer: B

    Solution :

    Volume of gas at STP = No. of moles \[\underbrace{\text{ }\!\!\times\!\!\text{  22}\text{.4 L}}_{\text{a}}\] No. of moles = Volume of gas at STP\[\underbrace{\div \text{ 22}\text{.4 L}}_{\text{b}}\]


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