Question

"formic acid behaves both as an aldehyde and acid . explain​

Answer 1

Formic acid (HCOOH) reduces Tollen's reagent. It contains a hydrogen atom instead of an alkyl group. thus formic acid may be regarded both as an aldehyde as well as a carboxylic acid. Like aldehydes it can be easily oxidised to carbonic acid (H2 CO3 ) which decomposes to give CO 2

and H2O.