What type of aldehydes undergo Cannizzaro reaction ?

Which type of aldehydes do not undergo Cannizzaro's reaction?

Acetaldehyde does not undergo Cannizzaro reaction. Why ?

Acetaldebydc does not undergo Cannizzaro's reaction, Why?

Formaldehyde (HCHO] undergoes Cannizzaro reaction : Give reason.

Formaldehyde undergoes Cannizzaro's reaction. Give reason.

Name the products obtained when benzaldehyde is made to undergo Cannizzaro's reaction using a concentrated solution of potassium hydroxide. Give the equation of the reaction.

The compound that does not undergo Cannizzaro reaction is

Formaldehyde [HCHO] Undergoes Cannizzaro reaction: Give reason.

Explain Cannizzaro 's reaction.