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NEET levelSingle correct optionDifficulty 1 of 3pn057

Which one of the following oxides is amphoteric?

A $Na X_{2} O$
B $CaO$
C $SO X_{2}$
D $Al X_{2} O X_{3}$

Answer: D

Al X_{2} O X_{3}

reacts with both acids and bases (to give salts and aluminates).

Na X_{2} O

and

CaO

are basic and

SO X_{2}

is acidic.

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