Why do we apply paint on iron articles?

Answer:

Explanation:

Iron reacts with oxygen and moisture (water vapor) in the air to form rust. Rust is a reddish-brown flaky substance that weakens the metal over time. This process is called corrosion.

Iron (Fe) + Oxygen (O₂) + Water (H₂O) → Rust (Fe₂O₃⋅xH₂O)

To protect iron from rusting, we apply paint. Paint acts as a protective coating and prevents air and moisture from reaching the surface of the iron. Without oxygen and water, the iron cannot rust.