Chemistry - Carbonyl compounds Question with Solution | TestHub

In cannizaro reaction$\mathrm{C}-\mathrm{C}$cannot be formed as here the compound (aldehyde) having no$\mathrm{\alpha }-\mathrm{H}-$atom undergoes disproportion with a strong base to give an alcohol and an acid salt for eg.
$2\mathrm{H}\mathrm{C}\mathrm{H}\mathrm{O}\stackrel{\mathrm{c}\mathrm{o}\mathrm{n}\mathrm{c}.\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}}{\to }\mathrm{H}\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{N}\mathrm{a}+\mathrm{C}{\mathrm{H}}_3\mathrm{O}\mathrm{H}$
While in all other reactions C-C bond formation occur.

Friedal- Crafts acylation:-


Reimer- Tieman reaction:-


Wurtz reaction:-