Question:
Which of the following is an amphoteric oxide?
Which of the following is an amphoteric oxide?
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Al$_2$O$_3$ is found in bauxite and is used in aluminum extraction.
Updated On: Nov 5, 2025
- Na$_2$O.
- MgO.
- Al$_2$O$_3$.
- P$_2$O$_5$.
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The Correct Option is C
Solution and Explanation
An amphoteric oxide is one that reacts with both acids and bases. Aluminum oxide (Al$_2$O$_3$) exhibits this behavior:
\[
Al_2O_3 + 6HCl \rightarrow 2AlCl_3 + 3H_2O
\]
\[
Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]
\]
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