Problem: Electric motor:

Perhaps the first electric motors were simple electrostatic devices created by the Scottish monk Andrew Gordon in the 1740s. The theoretical principle behind production of mechanical force by the interactions of an electric current and a magnetic field, Ampere's force law, was discovered later by Andre-Marie Ampere in 1820. The conversion of electrical energy into mechanical energy by electromagnetic means was demonstrated by the British scientist Michael Faraday in 1821. A free-hanging wire was dipped into a pool of mercury, on which a permanent magnet (PM) was placed. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a close circular magnetic field around the wire. This motor is often demonstrated in physics experiments, brine substituting for toxic mercury. Though Barlow's wheel was an early refinement to this Faraday demonstration, these and similar homopolar motors were to remain unsuited to practical application until late in the century.

What toxic substance originally served the function of brine in primitive motors?
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A: mercury

Problem: The FBI also spied upon and collected information on Puerto Rican independence leader Pedro Albizu Campos and his Nationalist political party in the 1930s. Abizu Campos was convicted three times in connection with deadly attacks on US government officials: in 1937 (Conspiracy to overthrow the government of the United States), in 1950 (attempted murder), and in 1954 (after an armed assault on the US House of Representatives while in session; although not present, Abizu Campos was considered the mastermind). The FBI operation was covert and did not become known until U.S. Congressman Luis Gutierrez had it made public via the Freedom of Information Act in the 1980s.
When was the Abizu Campos operation made public?
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Answer: 1980s

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Tort law covers the entire imaginable spectrum of wrongs which humans can inflict upon each other, and of course, partially overlaps with wrongs also punishable by criminal law. Although the American Law Institute has attempted to standardize tort law through the development of several versions of the Restatement of Torts, many states have chosen to adopt only certain sections of the Restatements and to reject others. Thus, because of its immense size and diversity, American tort law cannot be easily summarized.
What law covers wrongs which humans can inflict upon each other?
A: Tort law

Context and question: On 11 July, Nasser replaced Amer with Mohamed Fawzi as general commander, over the protestations of Amer's loyalists in the military, 600 of whom marched on army headquarters and demanded Amer's reinstatement. After Nasser sacked thirty of the loyalists in response, Amer and his allies devised a plan to topple him on 27 August. Nasser was tipped off about their activities and, after several invitations, he convinced Amer to meet him at his home on 24 August. Nasser confronted Amer about the coup plot, which he denied before being arrested by Mohieddin. Amer committed suicide on 14 September. Despite his souring relationship with Amer, Nasser spoke of losing "the person closest to [him]". Thereafter, Nasser began a process of depoliticizing the armed forces, arresting dozens of leading military and intelligence figures loyal to Amer.
How did Nasser try to deal with the military following the coup attempt?
Answer: depoliticizing the armed forces

Question: Witnesses believe that a "little flock" go to heaven, but that the hope for life after death for the majority of "other sheep" involves being resurrected by God to a cleansed earth after Armageddon. They interpret Revelation 14:15 to mean that the number of Christians going to heaven is limited to exactly 144,000, who will rule with Jesus as kings and priests over earth. Jehovah's Witnesses teach that only they meet scriptural requirements for surviving Armageddon, but that God is the final judge. During Christ's millennial reign, most people who died prior to Armageddon will be resurrected with the prospect of living forever; they will be taught the proper way to worship God to prepare them for their final test at the end of the millennium.
Is there an answer to this question: What do most Protestant religions believe in regards to how many people get to go to heaven?

Answer: unanswerable

QUES: The most common forms of uranium oxide are triuranium octoxide (U
3O
8) and UO
2. Both oxide forms are solids that have low solubility in water and are relatively stable over a wide range of environmental conditions. Triuranium octoxide is (depending on conditions) the most stable compound of uranium and is the form most commonly found in nature. Uranium dioxide is the form in which uranium is most commonly used as a nuclear reactor fuel. At ambient temperatures, UO
2 will gradually convert to U
3O
8. Because of their stability, uranium oxides are generally considered the preferred chemical form for storage or disposal.

What is the stablest uranium compound?
What is the answer?
ANS:
Triuranium octoxide