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

  • question_answer
    Chemical changes are

    A) temporary and irreversible

    B) permanent and irreversible

    C) permanent and reversible

    D) temporary and reversible

    Correct Answer: B

    Solution :

    [b] The chemical changes are permanent, hence, they are irreversible, e.g. ripening of fruits, burning of fuels, etc.


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