Q118
In vulcanisation, natural rubber is heated with
A.
Carbon
B.
Silicon
C.
Sulphur
AnswerD.
Phosphorous
Answer: Option C
Solution
Answer: Option C
Solution:
Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140–160°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.