Question:
The structure of Buna-S polymer is
The structure of Buna-S polymer is
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Buna-S = Butadiene + Styrene. Buna-N = Butadiene + Acrylonitrile (N for Nitrile).
Updated On: May 5, 2026
- A
- B
- C
- D
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The Correct Option is A
Solution and Explanation
Step 1: Concept Buna-S is a copolymer formed by the addition polymerization of two different monomers.
Step 2: Meaning The name "Buna-S" comes from Butadiene, Na (Sodium catalyst), and Styrene.
Step 3: Analysis It consists of 1,3-butadiene and styrene in a roughly 3:1 ratio.
Step 4: Conclusion The structure is correctly identified by the option containing the benzene ring (styrene) and the butadiene backbone.
Final Answer: (A)
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