Which of the following organic compounds polymerizes to form the polyester dacron ?
Propylene and para HO−(C6H4)−OH
Benzoic acid and ethanol
Terephthalic acid and ethylene glycol
Benzoic acid and para HO−(C6H4)−OH
Of the following which one is classified as polyester polymer ?
Which of the following has cross-linked polymer chains ?
(a) bakelite (b) polyester (c) PVC (d) nylon
Which of the following is not a thermoplastic polymer ?
(a) polyester (b) melamine (c) nylon (d) polyvinyl chloride