Multiple choice general knowledge science & technology

With which metal does oxygen combine to form rust?

  1. Gold

  2. Silver

  3. Steel

  4. Iron
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rust forms when iron reacts with oxygen in the presence of moisture/water, creating iron oxide. Only iron and iron-containing metals (like steel) rust. Gold and silver are noble metals that don't oxidize under normal conditions.

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