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JEE Main levelSingle correct optionDifficulty 2 of 3pb119

Which pair consists of two amphoteric oxides?

A $CO X_{2}$ and $SiO X_{2}$
B $SnO X_{2}$ and $PbO X_{2}$
C $CO$ and $CO X_{2}$
D $CO X_{2}$ and $SnO X_{2}$

Answer: B

SnO X_{2}

and

PbO X_{2}

react with both acids and alkalis.

CO X_{2}

and

SiO X_{2}

are acidic and CO is neutral.

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