Page 1 - H.A-2 (PRACTICE WORKSHEET)
P. 1

SAI INTERNATIONAL SCHOOL

                                                      CLASS-VII
                                            SUBJECT - CHEMISTRY
                                TOPIC- MANAGEMENT OF WASTE WATER
                                SUB TOPIC- CUMULATIVE ASSIGNMENT-1








                         Q.                                       Questions                Skill  Marks
                         No.

                         1.     Fill in the blanks:-                                       R      1

                                 ………bring about undesirable changes in a natural
                                resource.


                         2.     I am one of those pipes that carry wastewater. Who         U      1
                                am I?

                         3.          For Assertion& Reason question follow the            U      1
                                       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

                                Assertion- An effective and closed drainage system is
                                essential.

                                Reasoning- Polluted water spread many water borne
                                diseases and cause communal health problem.

                         4.                                                                U      1
                                I am used as manure. Who am I?






                                                                                                         1
   1   2