Question:
Which of the following is amphoteric oxide?
Mn2O7, CrO3, Cr2O3, CrO, V2O5, V2O4
(i) V2O5, Cr2O3
(ii) Mn2O7, CrO3
(iii) CrO, V2O5
(iv) V2O5, V2O4
Solution:
Option (i) V2O5, Cr2O3 is the answer
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