Question

Why do people living in coastal areas have to make effort to protect iron objects from rusting?

Answer 1

In coastal area, there is lot of water and sodium chloride, salt, ionizes present in the coastal area can form rust on the iron objects.

Iron objects in the coastal area can absorb moisture from the air and salt can dissolve the moisture from the iron objects.

Due to this process, you need to put much effort to protect iron objects from rusting.

Answer 2

We know rusting occurs beacuse of the presence of water along with air.

This which reacts with metal to corrode it.

We also know that coastal area are near to sea, so quantity of water is very much, to have corrosion.

Hence, they have to effort to protect iron objects from rusting.