Write the name of monomers used for getting the following polymers :

(i) Terylene

(ii) Nylon-6, 6

(i) We know, terylene is a polyester, and a polyester is a polymer having the ester linkage.

Terylene also known as Dacron is prepared by the condensation polymerization reaction of two monomers – Ethylene glycol and Terepthalic acid. Condensation reaction involves the loss of a simple molecule like NH₃, H₂O, HCl, etc(here, H₂O is removed).

(ii) Nylon-6,6 is a copolymer of hexamethylenediamine and adipic acid through condensation polymerisation. The polymerisation type is named such because after the end of the reaction a simple molecule(here, H₂O) is released.