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

  • question_answer
    Which of the following is a chemical change?

    A)  Cooking of food

    B)  Evaporation of water

    C)  Mowing of grass

    D)  Melting of wax

    Correct Answer: A

    Solution :

    Cooking of food leads to the formation of a new substance and also the change is permanent. Therefore, it is a chemical change.


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