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SAI International School
                                                       Class-X

                                               Subject_ Chemistry
                                          Topic- Acids, Bases & Salts
                                   Sub Topic- Concept of Acids & Bases

                                               HOME ASSIGNMENT
               OBJECTIVE:
               MCQs
               Q.1  An aqueous solution turns red litmus solution blue. Excess addition of which
                     of the following solution would reverse the change?

                     (a) Baking powder (b) Lime(c) Ammonium hydroxide solution (d)
                     Hydrochloric acid

               Q.2  Which among the following is not a base? (a) NaOH (b) KOH (c) NH 4OH (d)
                     C 2H 5 OH

               Q.3  Which of the following are present in a dilute aqueous solution
                     of hydrochloric acid?

                                                    –
                                            +
                              +
                                   –
                                                          –
                                                                  –
                     (a) H 3O  + Cl (b) H 3O  + OH (c) Cl  + OH (d) unionised HCl
                     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:  H 2CO 3 is a strong acid.
                     Reason: A strong acid dissociates completely or almost completely in water.

               Q.5
                     Assertion: Weak acids have low electrical conductivity.

                     Reason: Strong acids and weak acids have equal concentration of hydrogen
                     ions in their solutions.





               SUBJECTIVE:


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