MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the hardening temperature of unvulcanized natural rubber? |
| A. | 5<sup>o</sup>C |
| B. | 30<sup>o</sup>C |
| C. | 105<sup>o</sup>C |
| D. | 150<sup>o</sup>C |
| Answer» B. 30<sup>o</sup>C | |