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

  • question_answer
    Choose correct option on the basis of statement (i) and (ii) (i) When hydrogen bums in oxygen, water is formed (ii) When water is electrolyzed, hydrogen and oxygen are formed.

    A)  (i) is a physical change and (ii) is a chemical change

    B)  (i) is a chemical change and (ii) is a physical change

    C) Both (i) and (ii) are physical changes

    D) Both (i) and (ii) are chemical changes

    Correct Answer: D

    Solution :

    Both are chemical changes as new substances are formed.


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