Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: Because of resonance stabilization of its conjugate base, the alpha-hydrogen in them is more acidic than in alkanes. Using the Nef reaction, pyridinium salts reacted with secondary amines followed by hydrolysos creates them, as does the Rosenmund reduction that reduces an acyl halide to one. They can be synthesized by reacting a primary alcohol with an oxidizing agent, and they used to be named after their corresponding alcohols. FTP, identify this functional group consisting of an atom of carbon bonded to a hydrogen atom and double-bonded with an oxygen atom, which contains a terminal carbonyl group.
Output:
Science