Question

What happened when an iron article is exposed to humid atmosphere ?

Answer 1

there will be a formation of reddish brown coating on the iron article when exposed to humid atmosphere. This is due to the presence of moisture in the humid atmosphere.Oxygen present in the air in the presence of moisture or water vapor reacts with iron to form iron oxide which is called rust.

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Answer 2

CORROSION occurs to the metal....A compound called RUST is formed when iron particles come in direct contact with air or moisture..

RUST is Fe2O3.xH2O

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