Question

Which of the following is an amphoteric oxide?

• A. $V_{2}O_{5},Cr_{2}O_{3}$
• B. $Mn_{2}O_{7},Cr_{2}O_{3}$
• C. $CrO,V_{2}O_{5}$
• D. $V_{2}O_{5},V_{2}O_{4}$

Answer 1

Answer: (A)

The oxides which can react with both i.e acids and bases are called amphoteric oxides.
Oxides of vanadium $\left(V\right)$ and chromium $\left(Cr\right) \, $ show amphoteric nature in their oxides.
Hence $V_{2}O_{5},Cr_{2}O_{3}$ is the correct option.