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Answer: D. polyethene

Answer: (d) polyethene

Vulcanized rubber, buna-S (styrene-butadiene rubber) and neoprene (polychloroprene) are elastomers: they have weak intermolecular forces and a few cross-links, so they stretch and regain their shape. Polyethene is a thermoplastic polymer, not an elastomer.

Doubtly AI · 28 Oct 2026 AI-generated · not yet verified Report
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