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KCET · Chemistry · Polymers

In Buna-S, the symbol Bu stands for

  1. A 1-butene
  2. B \(n\)-butene
  3. C 2-butene
  4. D butadiene
Verified Solution

Answer & Solution

Correct Answer

(D) butadiene

Step-by-step Solution

Detailed explanation

When a mixture of 1,3 -butadiene and styrene in the ratio of \(3: 1\) and in presence of sodium undergoes copolymerisation, it gives styrene butadiene copolymer commonly called as styrene butadiene rubber.
(SBR) or Buna-S



In Buna-S, Bu stands for butadiene, Na for sodium which is the polymerising agent and \(S\) stands for styrene.