A) \[C{{l}_{2}}+2{{H}_{2}}O+S{{O}_{2}}\to 4{{H}^{+}}+S{{O}^{4-}}+2C{{l}^{-}}\]
B) \[C{{u}^{++}}+Zn\to Z{{n}^{++}}+Cu\]
C) \[2{{H}_{2}}+{{O}_{2}}\to 2{{H}_{2}}O\]
D) \[HCl+{{H}_{2}}O\to {{H}_{3}}{{O}^{-}}+C{{l}^{-}}\]
Correct Answer: D
Solution :
In reaction \[HCl+{{H}_{2}}O\to {{H}_{3}}{{O}^{-}}+C{{l}^{-}}\], only reduction has taken place not oxidation.
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