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Why should one always use purest monomer...

Why should one always use purest monomer in free radical polymerization ?

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ICSE-POLYMERS -EXERCISE (PART-II (DESCRIPTIVE QUESTIONS )) ( LONG ANSWER QUESTIONS )
  1. Describe briefly: Cationic polymerization

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  2. Describe briefly: Anionic polymerization

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  3. Why should one always use purest monomer in free radical polymerizatio...

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  4. Elaborate the structure of natural rubber.

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  5. How do double bonds in rubber molecules influence their structure and ...

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  6. What is vulcanization? How does vulcanization improve the quality of n...

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  7. What is the monomer of natural rubber? What is the difference in the s...

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  8. What is vulcanization ? Why is it done? Why is diphenyl added to rubbe...

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  9. Why is neoprene non-inflammable? Give one of its uses.

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  10. Define the following terms: Thermoplastics

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  11. Define the following terms: Thermosetting plastics

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  12. Define the following terms: Elastomers

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  13. Give two points of difference between thermoplastic and thermosetting ...

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  14. Give a brief description of natural and synthetic polymers

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  15. What do you mean by copolymerization ? What are its advantages over ho...

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  16. How is dacron prepared ? Name the type to which this polymer belongs?

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  17. How will you prepare the following (a) Buna-S (b) Bakelite (c) Tefl...

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  18. What are low density and high density polythenes? How are these manufa...

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  19. How are teflon and nylon-6 synthesised ? Identify the type of polymeri...

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  20. How is nylon-6, 10 prepared ?

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