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Subjective Questions


            Q.                                     Questions                                      Marks  Skill
           No.
            1.    What do you mean by reversible change?                                             1        K
            2.    Give two examples of reversible change.                                            1        U
            3.    Give two examples of irreversible change.                                          1        U
            4.    What do you observe when fireworks explode? Is anything new formed?                3        C
                  What type of change is it?
            5.                Change                 Physical / Chemical         Reversible /        3        A
                                                                                 Irreversible
                   Breaking of glass plate
                   Frying potatoes into fries
                   Rotting of vegetables
                   Tearing a piece of
                   aluminium foil
                   Ironing of clothes
                   Curding of milk

            6.    Look around you in your house and write down three reversible and three            3        H
                  irreversible changes.
















































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