Previous year MCQs

UPPSC 2020 GS-I
Question

Which of the following polymer is NOT a thermoplastic ?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Neoprene

Detailed Solution:

The correct answer is “Neoprene”.
Neoprene is not a thermoplastic. Neoprene, on the other hand, is a synthetic rubber.

Neoprene is a type of thermosetting polymer, not a thermoplastic. Unlike thermoplastics, which can be melted and re-molded multiple times, thermosetting polymers like neoprene solidify irreversibly once set and cannot be remelted.

Teflon, Polystyrene, and Polythene are all thermoplastics, which means they can be heated and re-molded repeatedly.

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