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SAI International School

                                                       Class-X
                                               Subject_ Chemistry
                                           Topic-Metal & Non metals

                         Subtopic- Chemical properties of Metal & Non metals
                                                Home Assignment
               Objective-
               MCQs
              Q.1      A reactive metal (M) is treated with H2SO4 (dil). The gas is evolved and is collected
                       over the water by downward displacement of air..
                       The correct conclusion drawn is/are
                       (a) the gas is hydrogen
                       (b) the gas is lighter than air
                       (c) the gas is SO2  and is lighter than air
                       (d) Both (a) and (b)
              Q.2      An element reacts with oxygen to give a compound with a high melting point. This
                       compound is soluble in water. The element is likely to be-
                                 (a) calcium               (b) carbon
                                 (c) silicon               (d) iron
              Q.3      Aluminium does not oxidise readily in air because-
                          (a) it is high in the electrochemical series
                          (b) it is low in the electrochemical series
                          (c) the metal does not combine with oxygen
                          (d) the metal is covered with a layer of oxide which does not rub off
                 ➢  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.
                       Assertion : Zinc oxide amphoteric in nature.
              Q.4
                       Reason : Zinc oxide reacts with both acids and bases.

              Q.5      Assertion : Carbon reacts with oxygen to form carbondioxide which is an acidic
                       oxide.
                       Reason : Non-metals form acidic oxides.






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