Dacron is synthesised by the polymerisation of:
- ADimethyl terephthalate with adipic acid
- BMethyl methacrylate with styrene
- CEthylene glycol with hexamethylenediamine
- DEthylene glycol with dimethyl terephthalate
Show answer and explanation
Correct answer: (d) Ethylene glycol with dimethyl terephthalate
Explanation
Dacron (also called terylene) is a polyester, polyethylene terephthalate (PET). It is made by condensation polymerisation of ethylene glycol with terephthalic acid or dimethyl terephthalate.
It is strong and does not crease, so it is used in clothes (often mixed with cotton or wool), sails and ropes.
Option (c) is wrong: nylon-6,6 comes from hexamethylenediamine and adipic acid, not ethylene glycol.