Which one of the following structures represents the neoprene rubber?

1. 
   
2. $-\left[\mathrm{CH}_2-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}(\mathrm{CN})\right]_n$
3. $\left[\mathrm{NH}-\mathrm{CO}-\mathrm{NH}-\mathrm{CH}_2\right]_n$
4. 
   

Solution

Neoprene rubber is chemically polychloroprene and is a synthetic rubber which is produced by polymerisation of chloroprene.

Asked in: AP EAMCET 2018 (23 Apr Shift 1)

Practice more Introduction to Polymer Chemistry questions on Aicharya