1.

Aldehydes undergo disproportionation reaction in presence of aqueous NaOH. Simultaneou oxidation and reduction of a compound is scientifically called as disproportionation. Aldehydes having no alpha-hydrogen show this rection called Cannizzaro's reaction. Few exception are also there to this represented as : C_(6)H_(5)CHO+C_(6)H_(5)CHO overset(NaOH)underset(Delta)to C_(6)H_(5)COONa+C_(6)H_(5)CH_(2)OH Intramolecular Cannizzaro's reaction is also possible. Answer the following questions : The aldehyde having alpha- hydrogen which gives Cannizzaro's reaction is :

Answer»

`CH_(3)-CH_(2)-CHO`
`CH_(3)-underset(CH_(3))CH-CHO`
`CH_(3)-underset(CL)CH-CHO`
`C_(2)H_(5)-CH_(2)-CHO`

ANSWER :B


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