Page 1 - HOME ASSIGNMENT-1(CH-2-OBJECTIVE & SUBJECTIVE)
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SAI International School
                                                       Class-X

                                               Subject_ Chemistry
                                          Topic- Acids, Bases & Salts
                                       Sub Topic- pH in Every Day Life

                                               HOME ASSIGNMENT
               OBJECTIVE QUESTIONS:
                   ➢  MCQs
                 Q.1
                       Antacids contain:
                       (a) weak base        (b) weak acid

                       (c) strong base      (d) strong acid

                 Q.2
                       Calcium phosphate is present in tooth enamel. Its nature is:

                        (a)  basic
                        (b) acidic

                        (c) neutral
                        (d) amphoteric
                 Q.3    To protect tooth decay, we are advised to brush our teeth
                        regularly. The nature of the tooth paste commonly used is:

                        (a)  acidic

                        (b)  neutral

                        (c) basic

                        (d)  corrosive
                    ➢  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.



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