Question

Natural rubber or raw rubber consists of basic material latex which is a dispersion of isoprene. During the treatment, this isoprene forms a high molecular weight polymer of isoprene. Natural rubber can be obtained from five hundred different species of plants.
In the isoprene polymer all the isoprene have:

• A. trans 1, 4 configuration
• B. cis 1, 4 configuration
• C. both cis and trans 1, 4 configuration
• D. none of these

Answer 1

Answer: (B)

cis 1, 4 configuration

In the given image, all configurations are in cis-form.

Rubber is a natural polymer and possesses elastic properties. It is also termed as elastomer and has a variety of uses. It is manufactured from rubber latex which is a colloidal dispersion of rubber in water.