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Byju's Answer
Standard XII
Chemistry
The Cannizaro Reaction
Which of the ...
Question

Which of the following compound doesn't show Cannizzaro reaction?

A
Methanal
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B
2,2-Dimethylbutanal
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C
Glyoxal
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D
Phenyl ethanal
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Solution

The correct option is C Phenyl ethanal
Methanal, 2,2-Dimethylbutanal and Glyoxal do not contain alpha hydrogen atom. Hence, they undergoe cannizzaro reaction. They do not undergo aldol condensation.
Phenyl ethanal on the other hand., contain alpha hydrogen atom. Hence, it undergoes aldol condensation reaction. It does not show cannizzaro reaction.
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