A chain of small chemical units combined to form a large single unit is called ____
  • Polymer
  • Poly
  • Polythene
  • None of the above
Polythene and PVC are examples of
  • Bio degradable substance
  • Thermosetting plastics
  • Thermoplastics
  • Rayon
Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____
  • Polythene
  • Thermoplastics
  • Polyster
  • Thermosetting plastics
Polycot is made by mixing two types of fibres namely
  • Silk + Cotton
  • Polythene + cotton
  • Silk + Polyester
  • Polyester + Cotton
The 4 R Principle is
  • Reduce, Reuse, Recycle, Recover
  • Remember, reduce, Recycle, Rejoice
  • Repeat, Rejoice, recycle, reduce
  • None of the above
_____________ is an example of natural polymer
  • Rayon
  • Cellulose
  • Nylon
  • All of the above
Which of the following is Non-biodegradable
  • Woolen clothes
  • Plastic bag,
  • Cotton cloth
  • Wood
Bakelite and Melamine are examples of
  • Thermosetting plastics
  • Silk
  • Nylon
  • Rayon
Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fire resistant.
  • Nylon
  • Rayon
  • Melamine plastic
  • Silk
The coating on modern non- stick cookware and electric iron is of
  • Terrycot
  • Rayon
  • Polyester
  • Teflon
What is the other name for artificial silk?
  • Nylon
  • Rayon
  • Acrylic
  • Polyester
Which fibre is used as artificial wool?
  • Acrylic
  • Rayon
  • Nylon
  • Cotton
Polymers are made up of small units called
  • layers
  • molecules
  • cells
  • monomers
The strongest synthetic fibre is
  • nylon
  • rayon
  • polyester
  • acrylic
Wood pulp is used to make
  • plastic
  • wool
  • jute
  • rayon
Which of the following is a natural fibre?
  • Wool
  • Nylon
  • PVC
  • Polythene
Melamine is
  • thermoplastic polymer
  • thermosetting polymer
  • fibre
  • elastomer
Fibre produced in factories is called
  • man-made fibre
  • natural fibre
  • synthetic fibre
  • both (a) and (c)
PET is a
  • polyester
  • polyamide
  • nylon
  • thermosetting polymer
of the following cannot be recycled?
  • Toys
  • Cooker handles
  • Carry bags
  • Plastic chair
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