Which of the following polymers is NOT a thermoplastic?

సమాధానం చూపించు & వివరణ

సమాధానం: (B) Neoprene

వివరణ

Neoprene (polychloroprene) is a synthetic rubber (elastomer), not a thermoplastic. Teflon, polystyrene and polythene are thermoplastics.