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.

Q: The Schlenk equilibrium, which can be affected by the presence of dioxane, describes the stability of these compounds, whose synthesis can be improved by the addition of mercuric chloride amalgamates. They react with nitriles to form intermediate imine anions, and dry carbon dioxide can be bubbled through them to create carboxylic acids, which themselves do not form an addition product with these. In what is sometimes called their namesake's reaction, they act as strong nucleophiles to form tertiary or secondary alcohols from ketones or aldehydes. For 10 points, name these compounds formed by reacting an alkyl halide with magnesium, named for a French guy.

A: Science
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Q: Bloodstone, agate, and onyx are chalcedonic varieties of this mineral. Other color variations arise from substituting atoms for silicon; iron for citrine and amethysts, titanium for the rose variety. When cemented it makes sandstone and when fused, silica glass. For ten points, identify this mineral composed of crystalline silicon dioxide.

A: Science
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Q: One character in this work stares into a small bouquet of flowers, and another character in this work is a small girl wearing a white bonnet and a red dress who is running towards something. In the distance, the viewer can make out smoke coming from the smokestack of a small ship, and a young man with a top hat sits against a tree, apparently deep in thought, in this work, which also contains a dude in a black safari hat playing the trumpet. In the foreground of this work, a mustached man carries a bottle of booze under his arm and a cigar between his fingers, and next to him stands a woman with a humongous ass and an umbrella over her left shoulder, while in her right hand she holds the leash of a monkey. For 10 pointsname this painting by Georges Seurat.

A:
Fine Arts
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