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| Q. |
Which one of the following statements is not correct? Vulcanisation of rubber makes it - |
| A. | soft and flexible |
| B. | strong and hard |
| C. | chemical resistant |
| D. | withstand higher temperatures |
| Answer» A. soft and flexible | |
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Explanation: In order to give more strength and more elasticity, natural rubber is heated with sulphur or sulphur compounds at 150°C temperature. Vulcanized rubber has good tensile strength. The working temperature of vulcanized rubber is enhanced up to 100°C. It has good resistance to organic solvents. |
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