Question

Ebonite is:

• A. Polropene
• B. Natural rubber
• C. Synthetic rubber
• D. Highly vulcanized rubber

Answer 1

The correct option is D Highly vulcanized rubber

Ebonite is a brand name for a material generically known as hard rubber, and is obtained by vulcanizing natural rubber for prolonged periods. By mixing and heating rubber and sulfur, they combine and become low-elastic and very firm vulcanized rubber with an elongation percentage of approximately 3%.

Hence, option $D$ is correct.