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प्रश्न
Which one of the following metals is protected from corrosion by a layer of its own oxide?
पर्याय
Aluminium
Copper
Silver
Gold
MCQ
उत्तर
Aluminium
Explanation:
Aluminium forms a thin, protective layer of aluminium oxide (Al2O3) on its surface when exposed to air, which prevents further corrosion and protects the metal underneath.
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