Multiple choice Which of the following forms when glycerol reacts with phathalic anhydride? Bakelite Paraformaldehydes Trioxane Glyptal Carbowax Reveal answer Fill a bubble to check yourself D Correct answer Explanation This option is correct because glycerol is condensed with phathalic anhydride to form a polyester known as glyptal. It gives thermoseting polymer for making synthetic fiber.