How is metal corrosion prevented?

Explanation

(i) The slow process of decay or destruction of metal due to the effect of air, moisture and acids on it is known as corrosion.
(ii) Gold ornaments do not get corroded.
(iii) Gold is a noble metal pand is least reactive.
(iv) It does not react with water or any of the gases present in the atmosphere. Common acids do not have any effect on gold.
(v) Thus gold ornaments do not corrode.