is the process of heating rubber with sulphur to improve its strength and hardness.

Vulcanisation

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Galvanisation

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Solution

The correct option is A Vulcanisation
Natural rubbers are obtained from the latex of rubber trees. They are soft and elastic.

Inorder to increase the strength and hardness, they are heated with sulphur for few hours by the process of vulcanisation. Vulcanised rubber is hard, durable and less elastic.

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