MCQOPTIONS
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| 1. |
Which among the following cannot exist in local equilibrium with solder enriched with Bi at 200 degree Celsius? |
| A. | Cu6Sn5 |
| B. | Cu3Sn |
| C. | Cu9Sn5 |
| D. | CuSn7 |
| Answer» D. CuSn7 | |