Multiple choice

Which of the following is not an example of thermoset plastics?

  1. Vulcanized rubber

  2. Melamine

  3. Bakelite

  4. Polystyrene

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thermoset plastics (vulcanized rubber, melamine, bakelite) undergo irreversible curing and cannot be remelted. Polystyrene is a THERMOPLASTIC - it softens upon heating and can be reshaped multiple times, making it the correct answer as 'not an example of thermoset'.

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