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Class 11 NEET Chemistry Redox Reactions Questions
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Question : 5
Total: 27
Which of the following reactions is a decomposition redox reaction?
[NEET Re-2022]
P
4
(
s
)
+
3
OH
−
(
aq
)
+
3
H
2
O
(
l
)
→
PH
3
(
g
)
+
3
H
2
PO
2
−
(
aq
)
2
Pb
(
NO
3
)
2
(
s
)
→
2
PbO
(
s
)
+
4
NO
2
(
g
)
+
O
2
(
g
)
N
2
(
g
)
+
O
2
(
g
)
→
2
NO
(
g
)
Cl
2
(
g
)
+
2
OH
−
(
aq
)
→
ClO
−
(
aq
)
+
Cl
−
(
aq
)
+
4
H
2
O
(
I
)
Validate
Solution:
👈: Video Solution
Lead nitrate decomposed to give
PbO
,
NO
2
and
O
2
. In this Nitrogen atom oxidation state changes from
+
5
to
+
4
and oxygen changes from
−
2
to zero.
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