MCQOPTIONS
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MCQOPTIONS
| 1. |
Season-cracking can be prevented by cold-working of brass at _________$ |
| A. | 15<sup>o</sup>C |
| B. | 100<sup>o</sup>C |
| C. | 300<sup>o</sup>C |
| D. | 550<sup>o</sup>C |
| Answer» D. 550<sup>o</sup>C | |