When iron is rusted, it is

Options

A. oxidised
B. reduced
C. evaporated
D. decomposed

Answer

A

Explanation

`Fe(s) rarr Fe^(2+) + 2e^(-)` (Oxidation)
`O +4H^(+) + 4e^(-) rarr 2H_2O`(Reduction)
Aumospheric oxidation:
`2Fe^(2+) 2H_2O + 1/2O_2 rarr Fe_2O_3 +4H^(+)` Rust is `Fe_2O_3`,. `xH_2`,O Corrosion or rusting occurs in the presence of water and air