Question

what is corrosion. explain in detail .​

Answer 1

Answer:

CORROSION :

The eating up of a metal by the action of a moisture or chemical such as an acid on the earth surface is called corrosion

☞corrosion of iron is a continuous process which ultimately eat up the whole iron object

☞corrosion of iron is called a Rusting

Rusting of iron

when when an iron object is left in a damp air or water for a considerable time it gets covered with are Red Brown flaky substance called rust. This is called rusting of iron

CONDITION NECESSARY FOR RUSTING OF IRON

(1)presence of air

(2)presence of water

PREVENTION OF RUSTING

(1)Rusting of iron can be prevented by painting

(2) Rusting can be prevented by applying grease oil.

(3) rusting of iron can be prevented by galvanisation.

(4) Rusting of iron can be prevented by tin plating and chromium plating

(5) Rusting of iron can be prevented by alloying it to make stainless steel

Answer 2

Corrosion

The gradual eating up of metals by action of air, moisture or a chemical reaction (such as an acid) on their surface is called corrosion. The most commonly seen example of corrosion of metals is rusting of iron i.e the formation of a brown flaky substance on iron objects on exposure to moist air.

Prevention

Use a coating or barrier product such as grease, oil, paint or carbon fibre coating

Lay a layer of backfill, for example limestone, with underground piping

Use a sacrificial anode to provide a cathodic protection system