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Which of the following oxide is amphoteric in nature?
A
$CO_2$
B
$SnO_2$
C
$SiO_2$
D
$GeO_2$
Detailed Solution
$SnO_2$ is amphoteric, reacting with both acids and bases. ($CO_2$ and $SiO_2$ are acidic oxides; $GeO_2$ is predominantly acidic/weakly amphoteric but the standard NCERT-level answer identifies $SnO_2$ as the amphoteric oxide among these.)