Question

Metals have Lustre (shine). Give reason why some metal articles become dull and loose their shine.

Answer 1

some metals often lose their shine and appear dull because of the action of air and moisture on them some metals as a result of oxidation with the atmospheric oxygen form oxides and by which their appearance becomes dull

Explanation

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Answer 2

Answer:-

Some metals often lose their shine and appear dull, because of the action of air and moisture on them. Some metals as a result of oxidation with the atmospheric oxygen form oxides and by which their appearance becomes dull.

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