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What is added to rubber to make it a thermosetting polymer?(a) Potassium(b) Sulphur(c) Sodium(d) PhosphorousThis question was addressed to me during an internship interview.This interesting question is from Rubber topic in division Materials for Construction of Basic Civil Engineering

Answer»

The correct option is (b) SULPHUR

Best explanation: The process of vulcanization makes RUBBER GET converted into a heavily cross-linked, insoluble and infusible compound.It is done by adding sulphur and litharge (PBO).



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