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AIEEE 2003 Chemistry Solved Paper
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© examsnet.com
Question : 9
Total: 76
Which one of the following is an amphoteric oxide?
Na
2
O
SO
2
B
2
O
3
Zno
Validate
Solution:
These elements are called amphoteric which reacts with both acid and base.
(1)
Z
n
(2)
Be
(3)
Al
(4)
B
(5)
Cr
(6)
G
a
(7)
Pb
(8)
S
n
Here
Z
n
,
B
e
,
A
l
,
P
b
and
S
n
are mostly amphoteric.
B
,
C
r
and
G
a
are less amphoteric.
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