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| Q. |
Vulcanized rubber contains sulphur – |
| A. | 2% |
| B. | 3-5% |
| C. | 7-9% |
| D. | I 0- 5% |
| Answer» B. 3-5% | |
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Explanation: A vulcanized flexible tyre rubber contains about 3 -5% of sulphur whereas hard rubber (ebonite) contains about 32% of sulphur. The stiffness of vulcanized rubber depends on the amount of sulphur added. |
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