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:
Melamine resin is formed by dehydration of this compound, while barbiturates can also be formed by addition of this compound to malonic acid. Other uses of this compound include separation of racemic mixtures. Originally produced by a reaction between silver cyanate with ammonium chloride, it is now made in indusrial quantities by heating carbon dioxide with ammonia. When arginine is split, it forms an ornithine molecule and a molecule of this; the principal end product of mammalian nitrogen metabolism. First isolated by H.M. Rouelle, FTP, name the compound used to disprove the theory of vitalism when, in 1828 Friedrich Wohler, first synthesized it from inorganic materials.
answer:
Science

question:
To isolate volatile compounds from nonvolatile impurities, the steam form of this process is used when the compounds decompose at standard temperatures and pressures. Two miscible liquids are heated under a Liebig condenser to increase the concentration of the liquid with the lower boiling point in a common type of this process. FTP, name this separation method by boiling point, whose fractional variety yields cosmetics from petroleum and alcohol from a water mixture.
answer:
Science

question:
One painting shows the artist as this character clasping a young lady on a white sheet, and was painted shortly after the artists model Wally left him. Another painting shows him holding an arrow and peering through an open door while the other title character ignores an angel in favor of a purse, and a third painting shows him herding people through a trap door marked with a cross. In another painting, a cobra watches him riding the wrong way around a racetrack, and an engraving shows him holding an hourglass while the first title character steadfastly ignores him and the pig-snouted third title character. For 10 points, name this character who was depicted by Bosch with the Miser, by Schiele with the Maiden, by Drer with a knight and a devil, and by Ryder on a Pale Horse.
answer:
Fine Arts