Explain the difference between Buna-N an | Class 12 Chemistry Chapter Polymers, Polymers NCERT Solutions

Question:

Explain the difference between Buna-N and Buna-S.

Answer:

 

Buna – N

Buna - N is a copolymer of 1,3−butadiene and acrylonitrile. It is also called Nitrile rubber (NBR). It is obtained by polymerization of 1,3-butadiene and acrylonitrile in the presence of sodium .It is used for making oil seels, manufacturing of tank linings, protective gloves etc.

Buna − S

Buna - S is a copolymer of 1,3−butadiene and styrene. It is obtained by polymerization of 1,3-Butadiene and styrene in the ratio 3:1 in the presence of sodium.

In Buna - S, Bu stands for butadiene, Na for sodium and S for styrene. It is also called SBR (Styrene Butadiene Rubber).It has slightly less tensile strength than natural rubber. It is used for making automobile tyres, rubber soles, belts, hoses etc.


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Polymers.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

  • Tabassum parween
  • 2020-02-25 12:47:55

Very good answer thnk u


  • Trinayan
  • 2019-10-20 20:36:07

which one is more swells in oil or solvant


  • Debjit kundu
  • 2019-09-08 11:10:35

Not appropriate answer....


  • Debjit kundu
  • 2019-09-08 11:09:34

In book sodium is not given, CN is given....


  • Somnath Ghosh
  • 2019-06-14 14:01:03

Wonderful answer


  • Gayathri Prasad
  • 2019-03-13 04:36:57

Wonderful ❣️ thank u for helping me 👌💋💋


  • Kritika Motiramani
  • 2019-02-17 13:27:10

Very good site and helpful one


  • Suresh kumar
  • 2019-02-11 17:33:27

Natural rubber hai ya synthetic rubber


  • Amar pratap jarvis
  • 2018-12-27 11:30:44

Clearly expiation


  • Amar pratap jarvis
  • 2018-12-27 11:29:58

Clearly explanation


Comment(s) on this Question

Welcome to the NCERT Solutions for Class 12 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 5: Explain the difference between Buna-N and Buna-S.....