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SAI INTERNATIONAL SCHOOL
                                                         STD-VII

                                              SUBJECT - CHEMISTRY
                                  TOPIC-MANAGEMENT OF WASTE WATER
                          SUB TOPIC-STEPS TO PREVENT WATER POLLUTIOIN

                                                      HOME ASSIGNMENT



               OBJECTIVE


               MCQ

               Sl.No.                            Questions                             Mark         Skill
               Q.1      Which of the following is not cause water pollution?           1            U
                                a)  Excreta of animals
                                b)  Pesticides
                                c)  Insecticides
                                d)  Slacked lime
               Q2.                                                                     1            R
                        Choose the correct statement.
                            a)  Industrial wastes should not be treated before
                                discharged.
                            b)  Sewage treatment plants should be built to
                                prevent sewage mixing with water.
                            c)  Sewage is organic matter which can be used
                                as fertilizer.
                            d)  Excessive use of chemical is helpful for
                                prevention of water pollution.
               Q.3      A plan taken by India Government to reduce water               1            U
                        pollution is
                            a)  Ganga action plan
                            b)  Yamuna action plan
                            c)  Damodar action plan
                            d)  Tista action plan
               Q4.      The disease cause due to water pollution is                    1            R
                                a)  AIDS
                                b)  Common Cold
                                c)  Jaundice
                                d)  Heart Problem



               SUBJECTIVE


               Sl.No.                             Questions                               Mark        Skill
               Q.1            For Assertion& Reason question follow the following        1           u
                                directions.



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