Aluminium is a self-protecting metal,because

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Question

(C) Aluminium is called a self-protecting metal because when it comes in contact with the atmosphere,it is covered entirely with a thin,non-porous lay

Vedclass · Accepted Answer

$A$ non-porous layer of oxide is formed on its surface

Vedclass · Answer

(C) Aluminium is called a self-protecting metal because when it comes in contact with the atmosphere,it is covered entirely with a thin,non-porous layer of aluminium oxide $(Al_2O_3)$.This layer acts as a protective barrier that prevents further oxidation or corrosion of the underlying metal.

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