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.
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Question: Rosenheim and Callow developed a test in which a mixture of this compound and metal acetates are used to detect the presence of sterols. Millon's reagent is a solution of mercury in this substance and a similar substance, which turns red in the presence of phenolic compounds and is useful in detecting tyrosine residues. The commercial production of this compound begins with the combustion of ammonia using a platinum-rhodium catalyst; that process is the Ostwald process. For 10 points, identify this acid which is found with hydrochloric acid in aqua regia, and has chemical formula HNO3.

Answer: Science


Question: Some of this man's later works were created for television, including a score for the 1942 adaptation of his opera The Pilgrim's Progress as well as an adaptation of his seventh symphony for Scott of the Antarctic. His first choral symphony is a setting of parts of five Walt Whitman poems, including "A Song For All Seas, All Ships. " This mans operas also include one featuring a prize fight between the title character and John the butcher, as well as a direct adaptation of a J.M. Synge play. Hugh the Drover and Riders to the Sea were composed by, FTP, which British composer, who also created The Lark Ascending, the London Symphony, and Fantasia on a Theme of Thomas Tallis

Answer: Fine Arts


Question: One analog of this phenomenon is described by the Righi-Leduc effect. Kane and Mele developed a model for one variety of it and the Corbino effect is a special case of it. In plasmas, its namesake parameter is the ratio of electron gyrofrequency to the particle collision frequency, and a version of this effect was discovered in a gallium arsenide heterostructure by Tsui and Stormer and explained by Laughlin. The resistance associated with this effect t can be measured by the Van der Pauw method and its quantum analogue, which breaks down into integer and ractional varieties, was discovered by von Klitzing. Resulting from an asymmetric distribution of charge density, which in turn creates an electric field, for 10 points, name this effect, in which a potential voltage is produced in a conductor in the presence of a magnetic field. 

Answer:
Science