Question

Compound W reduce Tollen's as well as Fehling solution. W on reaction w of W is (W contain C, H and O only)

Answer 1

Aldehyde

Answer 2

Tollen's reagent and Fehling's solution are mild oxidizing agents. They are reduced by aldehydes, which are oxidized to carboxylic acids. Ketones, with the exception of alpha-hydroxy ketones, do not react with these reagents. Since compound W reduces both Tollen's and Fehling's solutions, and contains only C, H, and O, it must be an aldehyde.