KCET · Chemistry · Polymers
In Buna-S, the symbol Bu stands for
- A 1-butene
- B \(n\)-butene
- C 2-butene
- D butadiene
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.
(SBR) or Buna-S

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