SAMPLE PAPER UP BOARD CLASS 10 SCIENCE 2

-10 ߙ (m ˜)

 

3 U                                                                                                  Z 30

 

U U

        ׷ S ܹ

 

.1.() ַ v U U                                               (1)

            (i) U (ii)   UU (iii)  UU (iv)  U

      () U..U. U-                                                                    (1)

            (i) (ii) SȤU (iii) (iv) U

      () ِ U v  U                                    (1)

            (i) mgo (ii) P2O5 (iii) d2O7 (iv) Al2O3

 

. 2 U U շ U U ǸU U U U U U U U U U  (Na2Co3) U, U U U U U U   U U U Co2 U U U U U U

          1. U U U U U       (1)

                    (i) U U U U                 (ii) Co2 U U 

                    (iii) U U             (iv)

          2. Na2Co3 NaHCo3 # U ( 跤U )     (1)

 

. 3.() UU U v U                         (1)

       () ..  v }   U?                                              (1)

       () Cu+H2So4 -----   ......... + ............ U           (1)

 

. 4.() U跤U UUU U SCU U                (1)

       () v U? ܹ                        (1)

       () ِ I.U.P.A.C. ܹ                                    (1)

          CH3-CH2-CH-CHO  , CH3-CO- CH3

                         I

                         CH3

. 5. () ȤU US U?         (1)

       () A ܹU U ܹ                          (1)

                   U,

        () Ul U v U U UUU U ߇             (2)

 

. 6. () UU   U U SCU U                          (2)

          () v U U? U ߇ U   (2)

          () A U                                                (2)

                (i) U    (ii)  v  h

 

. 7   U UU S                       (2)

 

. 8- U UU S U c SCU U   (2)

                            

          v U? U U   (2)

 

. 9  v U -( 跤U 繰)                                   (1&2)

          (i) U U U U

          (ii) v v   U U U

 

. 10 ȤU v ߇ U

          բ U 跤U                           (3)

 

U

1. UȤ U ‹ UU U

2. S U

3. U

4. U U

5. U ̉ UU U

U淤U U v U ߙ

 

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