CBSE  /  Class 8  /  Science  /  Synthetic Fibres and Plastics

  • 1. 
    What is the other name for artificial silk?

  • Nylon
  • Rayon
  • Acrylic
  • Polyester

  • 2. 
    Which fibre is used as artificial wool?

  • Acrylic
  • Rayon
  • Nylon
  • Cotton

  • 3. 
    Polymers are made up of small units called

  • layers
  • molecules
  • cells
  • monomers

  • 4. 
    The strongest synthetic fibre is

  • nylon
  • rayon
  • polyester
  • acrylic

  • 5. 
    Wood pulp is used to make

  • plastic
  • wool
  • jute
  • rayon

  • 6. 
    Which of the following is a natural fibre?

  • Wool
  • Nylon
  • PVC
  • Polythene

  • 7. 
    Melamine is

  • thermoplastic polymer
  • thermosetting polymer
  • fibre
  • elastomer

  • 8. 
    Fibre produced in factories is called

  • man-made fibre
  • natural fibre
  • synthetic fibre
  • both (a) and (c)

  • 9. 
    PET is a

  • polyester
  • polyamide
  • nylon
  • thermosetting polymer

  • 10. 
    of the following cannot be recycled?

  • Toys
  • Cooker handles
  • Carry bags
  • Plastic chair
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