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  5. Physical and Chemical Changes

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

  • question_answer
    Which of the following is NOT a chemical change?

    A)  Respiration

    B)  Crystallization

    C)  Combustion

    D)  Oxidation

    Correct Answer: B

    Solution :

    The formation of large crystals of pure substances from their solutions is called crystallization. It is a physical change.


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