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9th Class Science Is Matter Around Us Pure Question Bank MCQs - Is Matter Around us Pure

  • question_answer
    Which of following is a pure substance?

    A) Air

    B) Distilled water

    C) Steel

    D) Brass

    Correct Answer: B

    Solution :

    [b] Any substance that contains only one type of particles (e.g. molecules/atoms etc.) is said to be a pure substance. Among the given options, only distilled water has one type of particles (i.e. \[{{H}_{2}}O\]molecules).


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