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SAI INTERNATIONAL SCHOOL
                                                      CLASS-VII
                                             SUBJECT- CHEMISTRY
                              TOPIC-PHYSICAL AND CHEMICAL CHANGES
                          SUB TOPIC- SOME COMMON CHEMICAL CHANGES




               Objective/MCQs


               Choose the correct option/options


               Q.                                 Questions                               Skill    Marks
               No.

               1.       Melting of wax is a...... change whereas burning of candle is     U        1
                        a...... change.

                           a)  Physical, chemical
                           b)  Chemical, physical
                           c)  Physical, reversible
                           d)  Chemical, irreversible



               2.       Rust is an oxide of                                               K        1

                           a)  Lead
                           b)  Copper
                           c)  Iron
                           d)  Zinc
               3.       Which of the following is not a physical change?                  U        1

                           a.  Formation of curd.
                           b.  Boiling of water.
                           c.   Rolling of paper.
                           d.  Breaking of an egg.


               4.       Which of the process  is not applied to remove rust?               K&A  1

                           a)  Painting
                           b)  Galvanising
                           c)  Putting oil
                           d)  Adding salt.
               5.        Rusting is a chemical change as                                  K&U      1

                           a)  It forms a new substance
                           b)  It is reversible


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