Polyethylene terephthalate belongs to which class of synthetic polymer?
Answer & explanation
Correct answer: option 3
The correct answer is option 3. Polyester.
Polyethylene terephthalate (PET) belongs to the class of synthetic polymers known as Polyester. PET is a type of polyester that is widely used for packaging materials, including plastic bottles for beverages and food items. Polyesters are a class of polymers with ester functional groups in their main chain, and PET is specifically classified as a thermoplastic polyester.