GS PrelimsScience and TechnologyGeneral Science1998

Which one of the following metals does not form amalgams?

Zinc

Copper

Magnesium

Iron

Correct Answer: Option D

Explanation

1. The question asks which of the listed metals does not form amalgams. 2. An amalgam is an alloy of mercury with another metal. 3. Most metals can form amalgams with mercury, although the ease of formation and stability varies. 4. Zinc (Zn), Copper (Cu), and Magnesium (Mg) are all known to form amalgams with mercury. 5. Iron (Fe) is notably resistant to forming an amalgam with mercury under normal conditions. Mercury does not readily wet or dissolve iron. 6. Therefore, Iron is the metal among the options that does not readily form amalgams.

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