Question

How does painting of an iron gate prevent it from rusting​

Answer 1

Explanation:

For rusting, the presence of air(oxygen) and moisture(water) is required. Painting prevents direct interaction of iron, air and moisture. Hence, painting of an iron gate prevents it from rusting.

Answer 2

Answer:

The essential component for rusting is the contact of metal with oxygen and moisture. When the iron gate is painted,it creates a barrier over the surface of iron. The presence of the paint protects the iron to get in contact with oxygen, hence prevents it from rusting.