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KEAM 2015 Physics and Chemistry Paper
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© examsnet.com
Question : 96
Total: 120
Which one of the following is reduced by
H
2
O
2
in alkaline medium?
F
e
+
H
O
C
l
K
M
n
O
4
P
b
S
M
n
2
+
Validate
Solution:
K
M
n
O
4
reduced to
M
n
O
2
in the presence of
H
2
O
2
in alkaline medium. Therefore,
2
M
n
O
4
−
+
3
H
2
O
2
⟶
2
M
n
O
2
+
3
O
2
+
2
H
2
O
+
2
O
H
−
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