The iron pipes used in our homes to carry water are ________ to prevent from…

Iron reacts with oxygen and moisture in the air to form rust. This process is called Corrosion.

To prevent this, iron pipes are galvanised, which means they are coated with a thin layer of Zinc. The zinc layer acts as a protective barrier, stopping air and water from reaching the iron surface and thus preventing rusting.

So, galvanisation increases the life of iron pipes and is commonly used in household water pipes.