Question:
Which of the following can be repeatedly softened on heating?
(i) Polystyrene (ii) Melamine
(iii) Polyesters (iv) Polyethylene (v) Neoprene
Which of the following can be repeatedly softened on heating?
(i) Polystyrene (ii) Melamine
(iii) Polyesters (iv) Polyethylene (v) Neoprene
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Thermoplastics can be reshaped repeatedly, thermosetting plastics cannot.
Updated On: Mar 20, 2026
- (i) and (iii)
- (i) and (iv)
- (iii), (iv) and (v)
- (ii) and (iv)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Thermoplastics soften repeatedly on heating.
Step 2: Polystyrene and polyethylene are thermoplastics.
Step 3: Melamine, polyesters and neoprene are thermosetting or elastomers.
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