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Question
Identify the element that forms amphoteric oxide.
Options
Copper
Zinc
Calcium
Sulphur
MCQ
Solution
Zinc
Explanation:
Zn reacts with oxygen to form amphoteric oxide ZnO.
\[\ce{ZnO + 2HCl -> 2 nCl2 + H2O (acid)}\]
\[\ce{ZnO + 2NaOH -> Na2ZnO2 + H2O (Base)}\]
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Oxygen and Compounds of Oxygen
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