Discussion
The main element used in the vulcanisation of rubber is
Answer: C
Sulphur is used to vulcanise rubber.
Charles Goodyear's process, heating raw rubber with 3–5 per cent sulphur at about 145 °C, forms sulphur cross-links between the polyisoprene chains. The chains can then no longer slide past one another, so the rubber becomes harder, more elastic and much less sensitive to temperature.
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