E. STATE THE USE OF:
1. Magnesium in Duralumin
2. Copper in gold Jewellery
3. Mercury in sodium amalgam
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2. copper in gold is for molding design
3Sodium amalgam is an alloy of mercury and sodium. The term amalgam is used for alloys, intermetallic compounds, and solutions (both solid solutions and liquid solutions) involving mercury as a major component.
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