Question

Rusting of iron objects is faster in coastal areas than in deserts.Why?

Answer 1

Rusting of iron occurs only if iron comes in contact with moist air. In coastal areas, air contains high percentage of moisture because of sea or ocean, while in deserts air is dry and hot. As the percentage of moisture in air is more in coastal area compared to desert, rusting becomes faster.

Answer 2

Answer:

In coastal areas, the surrounding area is damp and contains lots of vapour whereas deserts contain very less water vapour. Hence due to continuous contact of water vapour with iron objects in coastal areas resulting in faster rusting of iron objects than in deserts