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NDA 2019 GAT · General Knowledge · Carbon and Organic Chemistry · easy

In the vulcanisation of natural rubber, rubber is heated with

Single correct option

In the vulcanisation of natural rubber, rubber is heated with
  1. A. carbon
  2. B. chlorine
  3. C. sulphur
  4. D. phosphorus
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Answer: (C) sulphur

Vulcanisation, discovered by Charles Goodyear, heats natural rubber with sulphur, which forms cross-links between the polymer chains. The product is harder, stronger and more elastic, and it does not become sticky in heat, which makes it suitable for tyres.
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Original question written in the NDA 2019 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake