Question

Which of the following is amphoteric oxide?

$Mn_{2}O_{7},CrO_{3},Cr_{2}O_{3},CrO,V_{2}O_{5},V_{2}O_{4}$

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

Answer 1

Answer: (A)

$V_{2}O_{5},Cr_{2}O_{3}$

Answer 2

$Cr_{2}O_{3}$ and $V_{2}O_{5}$ are amphoteric oxides