Question

Substance having ester linkage is:

• A. bakelite
• B. polythene
• C. PVC
• D. terylene

Answer 1

Answer: (D)

Bakelite : It is resin of formaldehyde $(HCHO)$ and phenol.

Polyethene : It is addition polymer of ethylene $\left(C{H}_2=C{H}_2\right)$. It has $C{H}_2-C{H}_2$ linkages.
PVC : It is polymer of vinyl chloride $\left(C{H}_2=CHCl\right)\text{. }$
Terylene : It is condensation polymer of terephthalic acid and ethylene glycol. It has ester linkages. These linkages are formed between acid and alcohol.