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SAI International School
                                                       Class-X

                                               Subject_ Chemistry
                                           Topic-Metal & Non metals
                                    Subtopic- General Metallurgy (part-2)

                                                Home Assignment

               Objective-
               MCQs
              Q.1      The correct order of increasing chemical reactivity is-
                       (a) Zn<Fe<Mg<K                      (b) Fe<Mg<Zn<K
                       (c) Fe<Mg<K<Zn                      (d) Fe<Zn<Mg<K

              Q.2
                       What is anode mud?
                          (a) fan of anode
                          (b) metal of anode
                          (c)impurities     collected     at     anode      in    electrolysis     during
                              purification of metals
                          (d) all of these

              Q.3      E is an element that’s ore is rich in E2O3& E2O3 is not affected by
                       water. It forms two chlorides, ECl2 and ECl3 . The element E  is
                          (a) copper                (b) zinc
                          (c) aluminium             (d) iron

                 ➢  For Assertion& Reason question follow the following directions.

              DIRECTION:   Each of these questions contains an Assertion followed by Reason.
              Read them carefully and answer the question on the basis of following options. You
              have to select the one that best describes the two statements.

              (a) If both Assertion and Reason are correct and Reason is the correct explanation of
              Assertion.

              (b) If both Assertion and Reason are correct, but Reason is not the correct
              explanation of Assertion.

              (c) If Assertion is correct but Reason is incorrect.
              (d) If Assertion is incorrect but Reason is correct.

              (e) If Assertion & Reason both are incorrect.

              Q.4
                       Assertion: In the metallurgy of Al, purified Al2O3  is mixed with Na3AlF6  or
                       CaF2 .
                       Reason: It lowers the melting point of the mixture and brings conductivity.

              Q.5      Assertion :  Zinc  carbonate  is  heated  strongly  in presence of air to form
                       zinc oxide and carbon dioxide.
                       Reason :  Calcination  is  the  process  in  which  a carbonate ore is heated
                       strongly in the absence of air to convert into metal oxide.




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