Which is the correct general formula for non-cyclic compounds in the homologous series? A alcohols B aldehydes C esters D primary amines - AQA - A-Level Chemistry - Question 27 - 2021 - Paper 3

The general formula for alcohols is given by the formula $C_nH_{2n+1}OH$. This indicates that for every n carbon atoms, there are $2n + 1$ hydrogen atoms plus one additional hydrogen for the hydroxyl group (OH). Thus, alcohols are indeed non-cyclic compounds fitting this formula.