Q. In vulcanisation, natural rubber is heated with

  • (A) Carbon
  • (B) Silicon
  • (C) Sulphur
  • (D) Phosphorous
βœ… Correct Answer: (C) Sulphur
Explanation: Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140–160°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.
Explanation by: Harikesh
Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140–160°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.

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