MCQOPTIONS
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| 1. |
_Delta iron occurs at temperature of$? |
| A. | Room temperature |
| B. | Above melting point |
| C. | Between 1400°C and 1539°C |
| D. | Between 910°C and 1400°C |
| Answer» D. Between 910¬¨‚àûC and 1400¬¨‚àûC | |