Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
Which one of the following is an amphoteric oxide?
Q. Which one of the following is an amphoteric oxide?
2332
215
KEAM
KEAM 2012
The d-and f-Block Elements
Report Error
A
M
n
2
O
7
0%
B
C
r
O
0%
C
V
2
O
4
12%
D
C
r
2
O
3
75%
E
V
2
O
3
75%
Solution:
The oxide, in which metal is present in its intermediate oxidation state, is amphoteric in nature. The oxidation states of metal in the given oxides are as
M
n
2
O
7
+
7
,
C
r
2
O
+
2
,
V
2
O
4
+
4
,
C
r
2
O
3
+
3
,
V
2
O
3
+
3
,
Thus,
C
R
2
O
3
is an amphoteric oxide, i.e., it reacts with acids as well as base.