Question

which is made of large number of Easter unit (1)teflon (2)PVC (3) bakelite (4) polyester​

Answer 1

Explanation:

Which is made of large number of Easter unit

(1)teflon

(2)PVC

(3) bakelite✓✓✓

(4) polyester

Answer 2

Answer:

       4) polyester.

Explanation:

       Poly + ester : the word itself conveys that the substance is made up of many number of ester units.