Addition of large amounts of platinum to a casting gold alloy will________________?
Correct answer: C. Increase its fusion temperature
- A. Decrease its strength and ability to be hardened
- B. Decrease its tarnish resistance
- C. Increase its fusion temperature
- D. Redden the alloy
Explanation
Platinum has a very high melting point, so adding a large amount raises the fusion temperature of a casting gold alloy. It also generally improves strength and corrosion resistance rather than reducing them.
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