A) rearrangement
B) oxidation
C) disproportionation
D) none of the above
Correct Answer: C
Solution :
Key Idea: Define all terms to find correct answer. [a] Rearrangement reaction: The atoms within molecule change their position during rearrangement reaction. [b] Oxidation: Oxygen adds during oxidation reaction. [c] Disproportionation: During this reaction half of the molecules of some substance are oxidised and other half are reduced. \[\underset{\text{benzaldehyde}}{\mathop{{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{5}}}\text{CHO}}}\,\,+\,NaOH\xrightarrow{{}}\underset{\text{sodium}\,\text{benzoate}}{\mathop{{{C}_{6}}{{H}_{5}}COONa}}\,\] \[+\,\underset{\text{benzyl}\,\text{alcohol}}{\mathop{\,{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH}}\,\] \[\because \]Half ofC6H3CHO molecules are oxidised to acid and other half of molecules are reduced to alcohol. \[\therefore \]It is disproportionation reaction.
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