Organic Functional Groups

Which functional group is present in all alcohols?

What is the general formula for carboxylic acids? Options: $$R-OH$$ , $$R-CHO$$ , $$R-COOH$$ , $$R-CO-R'$$

Which of the following compounds is an aldehyde? Ethanol, Ethanal, Propanone, Butanoic acid

What is the distinguishing feature of a ketone?

Characteristic of benzene:

What is the general formula for alkenes?

Which of the following is an example of an alkane? Ethene, Ethyne, Ethane, Ethanol

What is the distinguishing feature of an alkyne?

What is the IUPAC name for the compound with the formula $$CH_3CH_2OH$$ ?

Which functional group is present in butanoic acid?