Multiple choice Which of the followings sets contain only thermosetting polymers? Bakelite, Melmac, PMMA 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 D Correct answer Explanation Vulcanized rubber, Bakelite and Urea-formaldehyde resin all are Thermosetting polymers.