question_answer

In which of the following reactions new carbon-carbon bond is not formed?

A)  Cannizaro reaction

B)  Wurtz reaction

C)  Aldol condensation

D)  Friedel-Craft reaction

Correct Answer: A

Solution :

                   \[2HCHO\xrightarrow{\overset{Conc.}{\mathop{NaOH}}\,}HC{{H}_{2}}OH+HCOONa\] (Cannizaro reaction)       Hence, in Cannizaro reaction, no new carbon carbon bond is formed.