Which percentage of sulphur is used in the vulcanization of rubber?

Options

A. `"05%"`
B. `"03%"`
C. `"30%"`
D. `"55.0%"`

Answer

A

Explanation

Vulcanization is a process in which natural rubber is treated with 4-5% sulphur and certain organic compounds which accelerate the reaction between the rubber and sulphur. It introduces sulphur bridges between polymer chains thereby increasing its tensile strength, elasticity and resistance to abrasion.