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JEE Main Chemistry Class 12 The D and F Block Elements Part 1 Questions
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© examsnet.com
Question : 5
Total: 100
In mild alkaline medium, thiosulphate ion is oxidised by
M
n
O
4
−
to "
A
′
′
. The oxidation state of sulphur in "
A
′
′
is ......... .
[26 Feb 2021 Shift 2]
Your Answer:
Validate
Solution:
S
2
O
3
2
−
Thiosulphate
ion
[
Reducing
agent
]
+
M
n
O
4
−
Permanganate
ion
[
Oxidising
agent
]
Mild
─
─
─
─
─
─
▶
Alkaline
medium
S
O
4
2
−
Sulphate
ion
(
A
)
+
M
n
O
4
2
−
Manganate
ion
Oxidationnumber of sulphur in
S
O
4
2
−
(
A
)
is
+
6
[
∵
x
+
4
(
−
2
)
=
−
2
⇒
x
=
+
6
]
© examsnet.com
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