52. Which one of the following statements is not correct? Vulcanisation of rubber makes it A.Soft and flexible B.Strong and hard C.Chemical resistant D.Withstand higher temperatures
Answer: Option A Solution: In order to give more strength and more elasticity, natural rubber is heated with sulphur or sulphur compounds at 150°C temperature. Vulcanized rubber has good tensile strength. The working temperature of vulcanized rubber is enhanced up to 100°C. It has good resistance to organic solvents.
