Question

Aluminium does not oxidize readily in air because :

• A. it is immersed in kerosene oil.
• B. it is not as reactive as sodium
• C. the metal does not combine with oxygen
• D. the metal is covered with a thin layer of oxide which prevents further oxidation

Answer 1

The correct option is D the metal is covered with a thin layer of oxide which prevents further oxidation

At ordinary temperature, the surface of Aluminium is covered with a thin layer of oxide. The protective oxide layer prevents the metal from further oxidation and corrosion.

$4Al+3O_2\to 2A{l}_2{O}_3$