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Chemistry
Which of the following reactions does not involve oxidation-reduction?
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Q. Which of the following reactions does not involve oxidation-reduction?
NTA Abhyas
NTA Abhyas 2020
Redox Reactions
A
$2Rb+H_{2}O \rightarrow 2RbOH+H_{2}$
5%
B
$2CuI_{2} \rightarrow 2CuI+I_{2}$
12%
C
$CuO+H_{2} \rightarrow Cu+H_{2}O$
23%
D
$4 KCN + Fe ( CN )_{2} \rightarrow K _{4}\left[ Fe ( CN )_{6}\right]$
59%
Solution:
There is no change in the oxidation number of any species in the reaction so neither oxidation nor reduction occurs here.
$4 KCN + Fe ( CN )_{2} \rightarrow K _{4}\left[ Fe ( CN )_{6}\right]$