QUES: Brass, which is an alloy of copper and zinc, has been used since at least the 10th century BC in Judea and by the 7th century BC in Ancient Greece. Zinc metal was not produced on a large scale until the 12th century in India and was unknown to Europe until the end of the 16th century. The mines of Rajasthan have given definite evidence of zinc production going back to the 6th century BC. To date, the oldest evidence of pure zinc comes from Zawar, in Rajasthan, as early as the 9th century AD when a distillation process was employed to make pure zinc. Alchemists burned zinc in air to form what they called "philosopher's wool" or "white snow".
When was brass forbidden from use?

ANS: unanswerable

QUES: Publius Vergilius Maro (Classical Latin: [ˈpuː.blɪ.ʊs wɛrˈɡɪ.lɪ.ʊs ˈma.roː]; October 15, 70 BC – September 21, 19 BC), usually called Virgil or Vergil /ˈvɜːrdʒᵻl/ in English, was an ancient Roman poet of the Augustan period. He is known for three major works of Latin literature, the Eclogues (or Bucolics), the Georgics, and the epic Aeneid. A number of minor poems, collected in the Appendix Vergiliana, are sometimes attributed to him.
What work did Virgil write first?

ANS: unanswerable

QUES: The earthquake was the worst to strike the Sichuan area in over 30 years. Following the quake, experts and the general public sought information on whether or not the earthquake could have been predicted in advance, and whether or not studying statistics related to the quake could result in better prediction of earthquakes in the future. Earthquake prediction is not yet established science; there was no consensus within the scientific community that earthquake "prediction" is possible.
People wanted to know if the study of what math could produce better predictions?

ANS: statistics

QUES: From 1952 to 1964, most voters were registered Democrats, but the state voted for the Republican presidential candidate in every election except for 1964. The following year, Congress passed and President Lyndon B. Johnson signed the Voting Rights Act of 1965, providing for oversight of state practices and enforcement of constitutional voting rights for African Americans and other minorities in order to prevent the discrimination and disenfranchisement that had excluded most of them for decades from the political process.
Voter demographics of florida in the 1950's 

ANS:
1952 to 1964, most voters were registered Democrats, but the state voted for the Republican presidential candidate in every election except for 1964