1.

What is the percentage of sulphur used in vulcanization of rubber

Answer»

0.05
0.03
0.3
0.55

Solution :Vulcanization is a PROCESS in which natural rubber is TREATED with 4-5% SULPHUR and certain organic compound which accelerated the reaction between the rubber and sulphur. It introduced sulphur bridge between polymer chains thereby increasing its tensile strength, strength , elasticity and resistance to abrasion.


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