The option(s) with only amphoteric oxides is (are)

N O, B_{2} O_{3}, P b O, S n O_{2}

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C r_{2} O_{3}, C r O, S n O, P b O

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C r_{2} O_{3}, B e O, S n O, S n O_{2}

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Z n O, A l_{2} O_{3}, P b O, P b O_{2}

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Solution

The correct options are
C $C r_{2} O_{3}, B e O, S n O, S n O_{2}$
D $Z n O, A l_{2} O_{3}, P b O, P b O_{2}$
$N O \Rightarrow$ Neutral
$B_{2} O_{3} \Rightarrow$ Acidic
$C r O \Rightarrow$ Basic
All other oxides are amphoteric

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