Q. Which element is essential for the rusting of iron?

  • (A) Carbon dioxide
  • (B) Oxygen
  • (C) Nitrogen
  • (D) Helium
✅ Correct Answer: (B) Oxygen
Explanation: Oxygen and moisture are necessary for rusting to occur on iron surfaces.

Published by Sikhar Chaudhary ⭐ 6.79K Points at 06-Oct-2025 06:43 am in Chemistry

Explanation by: Sikhar Chaudhary
Oxygen and moisture are necessary for rusting to occur on iron surfaces.

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