TASK DEFINITION: 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.
PROBLEM: LDA is used to transform propargyl diol into one of these compounds in the Whiting reaction. A  useful one of these compounds is synthesized using zinc chloride to combine trimethylsilyl chloride  with methoxybutenone. The namesake value of these compounds is expressed as the mass of iodine  equivalent to the amount of (*) maleic anhydride reacting with a unit mass of one of these. The  cumulated type of these compounds are less stable than other types. Electrophilic addition can result in  both 1,2 and 1,4 additions in the conjugated type of these molecules. That type also undergoes a type of  reaction that follows the endo addition rule and forms cyclohexenes, the Diels-Alder reaction. For 10  points, name these hydrocarbons that contain two carbon-carbon double bonds.

SOLUTION: Science

PROBLEM: One of these organic compounds is converted to an alkene by a diorganochromium compound in the Takai olefination. Compounds may be reduced to this functionality via the use of DIBAL-H (die-bahl aitch), and alkynes are formed by a reaction of these compounds with tetrabromomethane and triphenylphosphine named for Corey and Fuchs. When these organic compounds lack a hydrogen atom in the alpha position, their disproportionation can be induced by a base in the Cannizzaro reaction. These organic compounds are oxidized to carboxylic acids by a diamminesilver (I) complex, leading to the precipitation of metal onto the inside of the vessel, giving the positive "silver mirror" result of the Tollens test. For 10 points, name this special class of ketones with one R group being just hydrogen.

SOLUTION: Science

PROBLEM: Adherents of this religion may only consume fish smaller than twelve inches. The word "Nyabinghi"   refers either to one sect of this religion or a type of ritual drumming. Adherents maintain their bodies  as temples by following the largely vegan I-tal ["eye"-TAHL] diet, and they refer to themselves as "I   and I". This religion shortens God's name from Jehovah to simply "Jah" and viewed emperor Haile  Selassie ["HIGHLY" suh-LAA-see] as the second coming of Jesus Christ. Name this religion often  publicized in reggae music that was popular in Jamaica, whose adherents smoke ganja, or cannabis,  and wear their hair in dreadlocks.

SOLUTION:
Social Science