Q48 / 84 · NTA Abhyas (NEET) 2020 · Chemistry · Polymers

What is true regarding vulcanization of rubber?

  • A
    Rubber molecules are joined through S-S linkage at the ends
  • Correct answer
    B
    Rubber molecules are linked through S-S linkage at the various parts of polymer backbone
  • C
    Vulcanization makes rubber perfectly crystalline
  • D
    Vulcanization converts rubber into a thermosetting polymer

Solution

Vulcanization is a process of heating natural rubber with sulphur. This brings about linking of polymer chains at various points of backbone through S-S linkage. This provides strength to the rubber.

Hence, the correct answer is option: 'B'.

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