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SAI International School
                                                         Class-IX
                                                  Subject-Chemistry
                                            Topic-Atoms and molecules
                                         Sub topic-Symbols of elements
                                                HOME ASSIGNMENT

               OBJECTIVE QUESTIONS
               Q.1      Assertion:  Na represents one atom of Sodium
                        Reason: Symbol of an element represents one atom of it.
               Q.2      Assertion: O represents one atom of oxygen
                        Reason: Molecular formula of an element represents one molecule of the
                        element
               Q.3      The symbol of Sodium is
                        a) So
                        b) Na
                        c) na
                        d) S
               Q.4      The Greek name of Potassium is.
                        a) Kalium
                        b) Potassium
                        c) Kolom
                        d) Kulum
               Q.5      Which of the following element has its symbol derived from its Greek
                        name?
                        a) Antimony
                        b) Sulphur
                        c) Calcium
                        d) magnesium
               Q.6      The metal used in the filament of electric bulb is Tungsten. Its symbol is
                        a) Fe
                        b) Sn
                        c) W
                        d) Hg
               Q.7      Hydragyrum is the Greek name of which metal?
                        a) Antimony
                        b) Arsenic
                        c) Mercury
                        d) Potassium
               Q.8      The correct symbol for copper is:
                        a) Co
                        b) Cr
                        c) Cp



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