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7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    Select the one that is not a chemical change:

    A) Dissolution of ammonia in water

    B) Dissolution of carbon dioxide in water

    C) Dissolution of oxygen in water

    D) None of these

    Correct Answer: C

    Solution :

    Dissolution of oxygen in water is a physical change as no new substance is formed.


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