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CBSE Class 12-science Answered

Do we need to by heart the methods and monomers of all polymers ? Is there a particular way to prepare in the exam point of view ? What about the preparations of these polymers ?
 
Also Give an example of a polymer with the reactions which is both addition and condensation polymer ?
What is Forma melamine resin
Asked by Surya Datta Sudhakar | 22 Feb, 2015, 12:04: PM
answered-by-expert Expert Answer
Dear sudhakarmsds@gmail.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

One question per post is appriciated. In case of multiple questions within a query, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.
However, answer to your query is as follows:
 
Yes. Study, understand and practice the entire chapter throughly. You can prepare some of the important questions provided below. It may come in your exams.
  • Write the names of monomers of the following polymers: 

(i)  Nylon 6,6 (ii) Neoprene (iii) Buna –N Polymerisation and its classification with example.

  • Types of polymers on the basis of structure.
  • Differentiate between homopolymer and co-polymer with example?
  • Write short note on:

          a) Condensation polymer

          b) Addition polymer

          c) Elastomer

          d) Fibres

          e) Teflon

  • Differentiate between thermoplastic polymers and thermosetting polymers with examples.
  • Define a copolymer, thermoplastics, Polymer, homopolymer, copolymer.
  • Explain the free radical mechanism from chain initiating step to chain terminating step.
  • Show how the low density and high density polythene is made. (Very important)
  • Bakelite and its importance.
  • The process of co-polymerisation.
  • A short note on rubber and its vulcanization. (Very important)
  • Explain the difference between Buna-N and Buna-S.
  • How is dacron obtained from ethylene glycol and terephthalic acid?
  • Identify the monomer in the following: (Important)
  • How does the presence of double bonds in rubber molecules influence their structure and reactivity? (Very important)
  • Complete the following reaction: (Important)
  • What are the monomeric repeating units of Nylon-6 and Nylon-6,6?
  • How can you differentiate between addition and condensation polymerization.
Regards

Topperlearning Team.
Answered by Hanisha Vyas | 25 Feb, 2015, 11:21: AM

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