What is the common name of $Methanal$?

Which functional group having two carbon atoms does not give a compound?

In the presence of which enzyme does the fermentation of glucose or fructose occur to produce ethanol and carbon dioxide?

Why should we prefer vegetable oils over animal fats for cooking food? Give a balanced chemical equation for the reaction for hydrogenation of vegetable oils. Name the catalysts in this reaction.

What is the monomer unit of Teflon?

What is formed when methanol is oxidized in the presence of $Ag_{2}O$ at an appropriate temperature?