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

  • question_answer
    In neutralization reaction acid reacts with a base to form salt and water and a lot of heat energy is given out. This reaction is:

    A) an exothermic physical change

    B) an endothermic chemical change

    C) an exothermic chemical change

    D) an endothermic physical change

    Correct Answer: C

    Solution :

    It is exothermic (heat evolved) and chemical change (new substance formed).


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