Question

Name a metal which gets corroded when kept in a moist atmosphere.

Answer 1

• Iron is a chemically more reactive element. When exposed to air and water it easily gets transformed into an undesirable substance.
• The Iron gets rusted in the presence of air and water and gets converted into a brown color powdery layer, such process is called rusting of Iron.
• The rusting will continues over a long period and hence the Iron loses its strength.
• The chemical reaction of rusting of iron is as follows:

$\underset{\left(\mathrm{Iron}\right)}{4\mathrm{Fe}\left(\mathrm{s}\right)}+\underset{\left(\mathrm{Oxygen}\right)}{3{\mathrm{O}}_2\left(\mathrm{g}\right)}+\underset{\left(\mathrm{Water}\right)}{{\mathrm{xH}}_2\mathrm{O}}\to \underset{\left(\mathrm{Rust}\right)}{\underset{(\mathrm{Hydrated}\mathrm{ferric}\mathrm{oxide})}{{\mathrm{Fe}}_2{\mathrm{O}}_3.{\mathrm{xH}}_2\mathrm{O}\left(\mathrm{s}\right)}}$

Therefore, Iron is the metal that gets corroded when kept in a moist atmosphere.