1.

Benzaldehyde reacts with ethanolic KCN to give

Answer»

`C_(6)H_(5)CHOHCN`
`C_(6)H_(5)CHOHCO OH`
`C_(6)H_(5)CHOH CO C_(6)H_(5)`
`C_(6)H_(5)COCOC_(6)H_(5+)`.

Solution :Benzoin CONDENSATION
`C_(6)H_(5)-overset(O)overset(||)underset(H)underset(|)(C) + overset(O)overset(||)underset(H)underset(|)(C) -C_(6)H_(5) overset(KCN)to C_(6)H_(5)-overset(O)overset(||)(C)-overset(H)overset(|)underset(OH)underset(|)(C)-C_(6)H_(5)`


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