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What is the function of sulfur in vulcan...

What is the function of sulfur in vulcanization of rubber?

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(i) [-CH_(2)-overset(CH_(3))overset(|)(C)H-]_(n) a homopolymer or copolymer ? (ii) What is the role of Sulphur in vulcanization of rubber?

(i) Whate is the role of Sulphur in the vulcanization of rubber ? (ii) Identify the monomers in the following polymer : (ii) Arrange the following polymers in the increasing order of their intermolecular forces : Terylene, Polythyene, Neoprene.

In the vulcanisation of rubber:

Due to vulcanization, rubber becomes

Which percentage of sulphur is used in the vulcanization of rubber?

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Chalocogen used in vulcanisation of rubber is ____.

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ICSE-POLYMERS -EXERCISE (PART-II (DESCRIPTIVE QUESTIONS )) ( SHORT ANSWER QUESTIONS
  1. Briefly describe the following terms giving one example of each. (i...

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  2. Define the following terms. thermoplastics

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  3. Define the following terms: Thermosetting plastics

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  4. Define the following terms. elastomers

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

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  6. What are copolymers ? Give the chemical equation for the preparation o...

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  7. What are elastomers ? Give the chemical equation for the preparation o...

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  8. Mention which of the following are addition polymers? (i) terylene ...

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  9. What is teflon? How is it synthesised ? Is it an addition or condensat...

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  10. What is the difference between nylon-6 and nylon-6, 6? Give their form...

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  11. What is Buna-S ? How is it synthesised ?

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  12. Name any two plasticizers.

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  13. Write the formula of compound of which PVC is a polymerized product.

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  14. What is the function of sulfur in vulcanization of rubber?

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  15. Give two uses of caprolactam.

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  16. How are Buna-S and Terylene synthesized ? Give chemical equations

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  17. What is the difference between the two notations : nylon-6 and nylon-6...

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  18. How is PTFE prepared ? Give its two uses.

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  19. How is bakelite made and what is its major use? Why is bakelite a ther...

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  20. Can a copolymer be formed in both addition and condensation polymeriza...

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