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

  • question_answer
    Which of the following is a chemical change?

    A)  Food gives out a foul smell

    B)  Pollution of air caused due to explosion of fireworks

    C)  Change of colour in a cut apple, if left outside

    D)  All of the above

    Correct Answer: D

    Solution :

    Statements (A), (B) and (D) are examples of chemical change.


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