MCQOPTIONS
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MCQOPTIONS
| 1. |
An insulating material named 85% magnesia can be used up to temperatures of _______ |
| A. | 120<sup>o</sup>C |
| B. | 250<sup>o</sup>C |
| C. | 315<sup>o</sup>C |
| D. | 460<sup>o</sup>C |
| Answer» D. 460<sup>o</sup>C | |