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Rusting of iron occurs mainly when iron is exposed to:

Rusting of iron occurs mainly when iron is exposed to:
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Hydrogen and argon
  • B Chlorine and neon
  • C Nitrogen and helium
  • D Water and oxygen
Correct Answer: Option D
Explanation:
Iron rusts when it reacts with oxygen in the presence of water or moisture. Both oxygen and water are needed for rusting to occur effectively.

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