Question

define corrosion?explain.

Answer 1

corroding of a material due to presence of air, water (moisture) etc is known as corrosion..
thank you hope it helps..

Answer 2

when metal reacts with gas it forms mettalic oxide and forms layer above that metal

the eroding of metal due to action of air is called corrosion

when iron is exposed to air it reacts and slowly its get demineralise is an example of corrosion