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SAI International School

                                                     Class – VIII
                                               Subject – Chemistry

                               Topic – SYNTHETIC FIBRES AND PLASTICS

                                               CONCEPT MAPPING


        Instructions:
              Solve the various conceptual questions given, based on the various concepts of the
               Chapter.

                                                  Home Assignment

                                             Concept – Synthetic Fibres

            Q1.  Define the term ‘spinnerets’.                                                            1

            Q2     Give 4 common examples of synthetic fibres.                                            1


            Q3     Why synthetic fibres are often mixed with natural fibres?                              1

            Q4     Give two examples of ‘Blended Fibres’ and mention what are they made up of.            1

            Q5     Write two properties of synthetic fibres.                                              1

            Q6     What do you understand by the terms ‘Monomers’ and ‘Polymers’?                         1


            Q7     Define ‘Polymerization’.                                                               1



                                        Concept – Types of Synthetic Fibres

            Q1.  Name the man-made fibre obtained from natural materials.                                 1


            Q2     Name the first fully synthetic fibre.                                                  1

            Q3     Which fibre is also known as semi-synthetic fibre?                                     1

            Q4     Write down two uses of the first fully synthetic fibre.                                1


            Q5     What is PET?                                                                           1

            Q6     Write down two uses of polyester fibres.                                               1

            Q7     Which fibre is used as the substitute for wool?                                        1


            Q8     Write down two uses of Rayon

            Q9     Write down two uses of Acrylic.




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