You will be given a definition of a task first, then some input of the task.
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.

Reacted with sodium chloride and carbon dioxide in the Solvay process, the first maser used a beam of particles of this compound. In the Raschig process, it is reacted with sodium hypochlorite, and hydroxylamine is derived from it by replacing a hydrogen with a hydroxyl group. Serving as a catalyst in the manufacture of Bakelite, the Ostwald process is used to turn it into nitric acid. Produced through the Haber-Bosch process, FTP, identify this chemical compound with chemical formula NH3.
Output:
Science