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

  • question_answer
    Study the given Venn diagram carefully.
     
    Identify 1, 2 and 3.
           

    A)
    1 2 3
     Melting of ice Rusting  of iron            Cutting a log of wood 
                   

    B)
    1 2 3
     Glowing of bulb Bursting of tyre Crystallisation
                   

    C)
    1 2 3
     Stitching of garments Burning a matchstick Burning of a  candle
                   

    D)
    1 2 3
     Melting of ice Decomposition of sugar Sublimation

    Correct Answer: C

    Solution :

    Stitching of garments is a physical change, burning a matchstick is a chemical change and burning of a candle involves both physical and chemical changes.


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