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Aldehydes undergo disproportionation reaction in presence of aqueous NaOH Simultaneous oxidation and. reduction 'of a compound is scientifically called as disproportionation.
Aldehydes having no a-hydrogen show this reaction called Cannizzaro's reaction. Few exceptions are also there to this generalization.
The reaction may be represented as:
![C subscript 6 end subscript H subscript 5 end subscript C H O plus C subscript 6 end subscript H subscript 5 end subscript C H O fraction numerator N a O H over denominator capital delta end fraction C subscript 6 end subscript H subscript 5 end subscript C O O N a plus C subscript 6 end subscript H subscript 5 end subscript C H subscript 2 end subscript O H](data:image/png;base64,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)
Intramolecular Cannizzaro's reaction is also possible.
![](https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/904341/1/1196556/Picture35.png)
The aldehyde which shows Cannizzaro's reaction is:
- HCHO
- all of these
The correct answer is: all of these
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if
and
then ![fraction numerator open parentheses x squared plus y squared close parentheses to the power of 4 over denominator x squared y squared end fraction equals](data:image/png;base64,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)
if
and
then ![fraction numerator open parentheses x squared plus y squared close parentheses to the power of 4 over denominator x squared y squared end fraction equals](data:image/png;base64,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)
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