What happens when aldehydes are oxidized with potassium dichromate and potassium permanganate?

Carboxylic acid is formed

The correct answer is option 1. Carboxylic acid is formed.

When aldehydes are oxidized with strong oxidizing agents such as potassium dichromate (K₂Cr₂O₇) or potassium permanganate (KMnO₄), they are converted into carboxylic acids. These oxidizing agents are powerful enough to fully oxidize the aldehyde group (-CHO) to a carboxylic acid group (-COOH).

Oxidation Reaction:
The general reaction for the oxidation of an aldehyde to a carboxylic acid can be represented as follows: