Page 1 - 4. Home Assignment - Ch-3 Uses of Metals & Nonmetals (Alloys)
P. 1

SAI International School
                                                       Class-X

                                               Subject_ Chemistry
                                           Topic-Metal & Non metals
                             Subtopic- Uses of Metals & Non- metals (Alloys)


                                                 Home Assignment


               Objective-

               MCQs
              Q.1      An alloy is
                          (a) an element                               (b) a compound
                          (c) a homogeneous mixture         (d) a heterogeneous mixture

              Q.2      Silver articles become black on prolonged exposure to air. This is due to the
                       formation of
                                 (a) Ag3N                  (b) Ag3O
                                 (c) Ag2S                  (d) Ag3S and Ag3N

              Q.3      Galvanisation is a method of protecting iron from rusting by coating it with
                       a thin layer of
                          (a) gallium       (b) aluminium        (c) zinc     (d) silver

                 ➢  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 : Bronze is an alloy of lead and tin.
                       Reason : Alloys are heterogeneous mixture of metalswith other metals and
                       non-metals.

              Q.5      Assertion : Food cans are coated with tin and not with zinc.
                       Reason : Zinc is more reactive than tin.






               1
   1   2