Question

______ is the slow conversion of iron into its hydrated oxide in the presence of moisture and air.

Answer 1

Rusting is the slow conversion of iron into its hydrated oxide in the presence of moisture and air.

Rusting - The reaction of iron with oxygen and moisture in air resulting in the formation of reddish-brown coloured hydrated iron oxide(rust) is called rusting.

$\mathrm{Iron}\left(\mathrm{s}\right)+\mathrm{Oxygen}\left(\mathrm{g}\right)+\mathrm{Water}\mathrm{vapour}\left(\mathrm{g}\right)\to \mathrm{Hydrated}\mathrm{iron}\mathrm{oxide}\left(\mathrm{s}\right)$

Therefore, rusting is the slow conversion of iron into its hydrated oxide in the presence of moisture and air.