Question:
Which statement is correct ?
Which statement is correct ?
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[Image showing monomers of Buna-S: 1,3-Butadiene and Styrene]
Buna-S stands for {Bu}tadiene {Na}trium (Sodium) {S}tyrene. Sodium was originally used as the catalyst for the polymerization.
Updated On: Feb 12, 2026
- Buna-N is a natural polymer.
- Buna-S is a synthetic and linear thermosetting polymer.
- Neoprene is an addition copolymer used in plastic bucket manufacturing.
- Synthesis of Buna-S needs nascent oxygen.
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The Correct Option is D
Solution and Explanation
Step 1: (A) is false; Buna-N is synthetic (Butadiene + Acrylonitrile).
Step 2: (B) is false; Buna-S is an elastomer, not a thermosetting polymer.
Step 3: (C) is false; Neoprene is a homopolymer of chloroprene.
Step 4: (D) is correct in the sense that the polymerization of Buna-S (Butadiene + Styrene) is a free-radical process initiated by peroxides which generate radicals/oxygen species to start the chain.
Step 2: (B) is false; Buna-S is an elastomer, not a thermosetting polymer.
Step 3: (C) is false; Neoprene is a homopolymer of chloroprene.
Step 4: (D) is correct in the sense that the polymerization of Buna-S (Butadiene + Styrene) is a free-radical process initiated by peroxides which generate radicals/oxygen species to start the chain.
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