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Write the chemical equation for the prep...

Write the chemical equation for the preparation of polyethene.

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The polymerisation of ethene takes place in the presence of free radical, i.e., peroxide, Themechanism. of polymerisation of ethene takes place in three steps.
Step I : Chain initiation step :
This step involves the formation and addition of free radical to the ethene molecule.

Step II : Chain propagating step : In this step, free radical reacts with another molecule of ethene. The formation of bigger size free radical chain takes place.

Step III : Chain terminating step : In this step, formation of polymerised product·takes place.
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OMEGA PUBLICATION-POLYMERS -QUESTIONS
  1. Explain the following terms : Chain growth polymersation.

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  2. Explain the following terms with example : Natural polymers.

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  3. Write the chemical equation for the preparation of polyethene.

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  4. How is PVC manufactured ? Give its uses.

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  5. Give the synthesis of following polymers. Nylon -66

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  6. Give the synthesis of following polymers. Orlon or PAN

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  7. Give the synthesis of following polymers. Nylon -66

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  8. Give the preparation of Telfon.

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  9. Write the name and structure of monomers of the following polymers : T...

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  10. Write the name and structure of monomers of the following polymers : N...

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  11. Write the name and structure of monomers of the following polymers : D...

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  12. What are copolymers? Give the chemical equation for the preparation D...

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  13. Give synthesis of following polymers : Natural rubber.

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  14. Give synthesis of following polymers : Bakelite.

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  15. What is vulcanization of rubber ? What are the advantages of vulcanize...

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  16. What is vulcanization of rubber ? What are the advantages of vulcanize...

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  17. Give the preparation and one use of : Neoprene.

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  18. Give the preparation and one use of : Buna-S.

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  19. What is polyamide ? How is nylon -6 synthesised ?Give one use of nylon...

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  20. Name a synthetic polymer which is an amide.

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