Multiple choice

Amalgams are __________________ .

  1. alloys

  2. gangue

  3. flux

  4. slag
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A Correct answer
Explanation

Amalgams are special alloys that combine mercury and other metals in the periodic table. The amalgam of Hg, Ag and Zn is used in dental fillings. A solution of sodium metal in liquid mercury metal is called sodium amalgam. Zn amalgam is used in voltaic cells.

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