Question

Aluminium sheet when exposed to air lose its lustre after sometime​

Answer 1

Explanation:

• aluminium objects lose their lustre and become dull after sometime. This is due to the corrosion of aluminium. When aluminium is exposed to moist air its surface is covered with a thin impervious layer of aluminium oxideAl2O3.

Answer 2

Answer:

A new aluminium vessel lose shine so soon after use due to the corrosion of aluminium metal when exposed to moist air. This happens because the oxygen of air reacts with aluminium to form a thin, dull layer of aluminium oxide all over the vessel.

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