A) 05% to 30%
B) 03% to 25%
C) 10% to 20%
D) 05% to 25%
Correct Answer: A
Solution :
[a] Vulcanization is a process in which natural rubber is treated with sulphur and certain organic compounds which accelerate the reaction between the rubber and sulphur. Thus about 5% S is used for making tyre rubber, 20-25% S for making ebonite and 30% S for making battery case rubber.
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