Multiple choice Which of the following sets contains thermosetting polymers only? PVC, Bakelite, Polystyrene Vulcanized rubber, Bakelite, PVC Vulcanized rubber, Bakelite, Urea-formaldehyde resin Bakelite, Urea-formaldehyde resin, Polystyrene Reveal answer Fill a bubble to check yourself C Correct answer Explanation Vulcanized rubber, Bakelite, Urea-formaldehyde resin: All are thermosetting polymers.