Strong oxidizing agents oxidize toluene and its derivatives to benzoic acids. However, it is possible to stop the oxidation at the aldehyde stage with suitable reagents that convert the methyl group to an intermediate that is difficult to oxidize further. The following methods are used for this purpose.

What is the product formed when toluene reacts with oxygen molecule in presence of MnO₂/ H₂SO₄ at 40⁰C? 

Benzaldehyde