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What are natural and synthetic polymers ...

What are natural and synthetic polymers ? Give two examples of each type.

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Natural polymers : Polymers which are found in nature, i.e., in animals and plants are called natural polymers, e.g., proteins, starch, cellulose, nucleic acids, remains and natural Sol. Rubber
Synthetic polymers : Man-made polymers are called synthetic polymers, e.g., plastics (polythene, PVC), synthetic fibres (polyester, 15.8 nylon-66) and synthetic rubber (neoprene, Buna-S).
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NCERT-POLYMERS-Exercise
  1. Arrangement the following polymers in increasing order of their interm...

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  2. Explain the terms polymer and monomer.

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  3. What are natural and synthetic polymers ? Give two examples of each ty...

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  4. Distinguish between the terms homopolymer and copolymer and give an ex...

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  5. How do you explain the functionality of a monomer?

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  6. Define the term polymersation.

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  7. Is(NH-CHR-CO)(n)a homopolymer or copolymer?

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  8. In which classes, the polymers are classified on the basis of molecula...

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  9. How can you differentiate between addition and condensation polymerisa...

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  10. Explain the term copolymersation and give two examples.

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  11. Write the free radical mechanism for the polymersation of ethene.

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  12. Define thermoplastics and thermosetting polymers with two examples of ...

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  13. Write the monomers used for getting the following polymers. (i) Poly...

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  14. Write the name and structure of one of the common initiators used in f...

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  15. How does the presence of double bonds in rubber molecules influence th...

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  16. Discuss the main purpose of vulcanisation of rubber.

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  17. Which are the monomeric repeating units of Nylon-6 and Nylon-6,6 ?

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  18. Write the names and structures of the monomers of the following polyme...

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  19. Identify the monomer in the following polymeric structures. (i)

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  20. How is Dacron obtained from ethylene glycol and terephthalic acid?

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