instruction:
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.
question:
Ninhydrin forms a Schiff base with this chemical, resulting in a hue known as Ruhemanns purple. The Birch reduction takes place in a liquid substrate of it, the reason it is common in methamphetamine labs. The Kjeldahl method uses this molecule as an end-product to measure the amount of nitrogen in a sample, and it is oxidized in the first step of a nitric acid forming procedure, the Ostwald process. For 10 points, name this weak base found in fertilizers, formed by combining hydrogen and nitrogen in a three-to-one ratio in the Haber process.
answer:
Science

question:
This man gives his name, along with that of Francis Sears, to a process in ultrasonic imaging for which the acoustic wavefronts act as optical gratings to diffract the light on either side of the central spot. The distance over which charge carriers in plasmas exclude electric fields via his namesake shielding is also known as his namesake length. With an assistant later famous in his own right for his rule for determining whether ring molecules would show aromatic properties, he developed a mathematical expression to explain characteristics of electrolytic solutions, the famous equation named for him and Erich Hckel. FTP name this man who also gives his name to the SI unit defined as about 3.3 x 10-30 Coulomb meters, which measures the molecular dipole moment.
answer:
Science

question:
The title character thinks of Rose, his maid, who is presumably being raped by the groom in one story by this author, who also wrote an ape who trained at the title locale to become a human in another story. In addition to "A Country Doctor" and "A Report to An Academy," this author also wrote about the death of the title character in the Black Woods in another story, while this author also wrote about Karl Rossman's wanderings in the title country in another work. A novel about the land surveyor K. hoping to work at the title building was written by this author of "The Hunter Gracchus" and Amerika, and he also wrote about the mysterious arrest of the banker Josef K in another novel. FTP, name this Czech author of The Castle, The Trial, and a story about Gregor Samsa's transformation into a bug, "The Metamorphosis. "
answer:
Literature