9th Class Science Sample Paper Science Olympiad Model Test Paper-5

  • question_answer
    Which of the following has the maximum number of atoms?

    A) \[20\,g\,of\,{{H}_{2}}O\]

    B) \[20\,g\,of\,C{{H}_{4}}\]

    C) \[20\,g\,of\,{{O}_{2}}\]

    D) \[20\,g\,of\,C{{O}_{2}}\]

    E) None of these

    Correct Answer: B


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