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SAI International School
                                                       Class-X

                                               Subject_ Chemistry
                                          Topic- Acids, Bases & Salts
                                Sub Topic- Study of Salts – 3. Baking Soda

                                                Home Assignment
               OBJECTIVE:
               MCQs
               Q.1    Chemical formula of baking soda is-
                         (a) MgSO 4               (b) Na 2CO 3
                         (c) NaHCO 3              (d) MgCO 3
               Q.2    Acetic acid was added to a solid X  kept in a test tube.A colourless and
                      odourless gas was evolved. The gas was passed through lime water which
                      turned milky. It was concluded that.
                         (a)  Solid  X  is  sodium  hydroxide  and  the  gas  evolved
                             is CO 2
                         (b)  Solid  X  is  sodium  bicarbonate  and  the  gas  evolved
                             is CO 2
                         (c)  Solid  X  is  sodium  acetate  and  the  gas  evolved  is
                             CO2
                         (d)  Solid  X  is  sodium  chloride  and  the  gas  evolved  is
                             CO 2
               Q.3   An acid (A) with sodium hydrogen carbonate is used in making the cakes
                     fluffy and spongy. It is due to the release of (B) gas in the reaction. Here, X
                     and Y  are
                                (a) A : Oxalic acid : B  : CO 2
                                (b) A : Tartaric acid : B  : O 2
                                (c) A : Succinic acid : B  : H 2
                                (d) A : Tartaric acid : B  : CO 2

                     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: Baking soda creates acidity in the stomach.
                     Reason: Baking soda is alkaline.

               Q.5  Assertion: Gas bubbles are observed when sodiumcarbonate is added to
                     dilute hydrochloride acid.
                     Reason: Carbon dioxide is given off in the reaction.



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