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

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

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 6228 Points
one month ago
Ans: Metals when exposed to air react with moisture and gases present in it, thereby forming a dull layer of some other compound on it.

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