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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) MgSO4                 (b) Na2CO3
                          (c) NaHCO3                (d) MgCO3
                       Acetic acid was added to a solid X  kept in a test tube.A colourless and
                 Q.2
                       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 CO2
                          (b)  Solid  X  is  sodium  bicarbonate  and  the  gas  evolved
                              is CO2
                          (c)  Solid  X  is  sodium  acetate  and  the  gas  evolved  is
                              CO2
                          (d)  Solid  X  is  sodium  chloride  and  the  gas  evolved  is
                              CO2
                       An acid (A) with sodium hydrogen carbonate is used in making the cakes
                 Q.3
                       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  : CO2
                                 (b) A : Tartaric acid : B  : O2
                                 (c) A : Succinic acid : B  : H2
                                 (d) A : Tartaric acid : B  : CO2

                    ➢  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 sodium carbonate is added to
                       dilute hydrochloride acid.
                       Reason: Carbon dioxide is given off in the reaction.




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