Q. Acetophenone when reacted with a base, $C _{2} H _{5} ONa$, yields a stable compound which has the structure
AIPMTAIPMT 2008Aldehydes Ketones and Carboxylic Acids
Solution:
Aldehydes and ketones with $\alpha$-hydrogen atom, when reacted with a base yields aldol which on heating loses water molecule to give $\alpha , \beta$-unsaturated aldehydes or ketones.
This reaction is called aldol condensation reaction.

