Synthetic Fibres and Plastic NCERT CBSE Class 8 Science Chapter 3 Summary Note
Synthetic Fibres and Plastic- Summary NCERT CBSE CLASS 8 SCIENCE * Fibres - -Very thin thread - Thread is prepared from it. * Fibres ----> Thread/Yarn---->Fabric/Cloth----> ---->Dress * Types of Fibres - (a) Natural fibres - -Fibres that are obtained from plants or animals, is called natural fibres. -Examples- Cotton, Jute, Silk, Wool (b) Artificial/Synthetic fibres- -Fibres that are not obtained from plants or animals, is called synthetic fibres. -Examples- Rayon, Nylon, Acrylic, tericot etc., * Monomer - (Mono- Single, Mere- Part/Unit) -Small Single unit whose repeatation make a large single unit. -Example- Paper is the monomer of book. * Polymer - (Poly- Many, Mere- Part/Unit) -Large single unit which is formed from small single units. -Example- Book is the polymer of paper. *