QUES: In 1671, Robert Boyle discovered and described the reaction between iron filings and dilute acids, which results in the production of hydrogen gas. In 1766, Henry Cavendish was the first to recognize hydrogen gas as a discrete substance, by naming the gas from a metal-acid reaction "flammable air". He speculated that "flammable air" was in fact identical to the hypothetical substance called "phlogiston" and further finding in 1781 that the gas produces water when burned. He is usually given credit for its discovery as an element. In 1783, Antoine Lavoisier gave the element the name hydrogen (from the Greek - hydro meaning "water" and - genes meaning "creator") when he and Laplace reproduced Cavendish's finding that water is produced when hydrogen is burned.
Who recognized hydrogen gas as a discreet substance?

ANS: Henry Cavendish

QUES: Neptune's orbit has a profound impact on the region directly beyond it, known as the Kuiper belt. The Kuiper belt is a ring of small icy worlds, similar to the asteroid belt but far larger, extending from Neptune's orbit at 30 AU out to about 55 AU from the Sun. Much in the same way that Jupiter's gravity dominates the asteroid belt, shaping its structure, so Neptune's gravity dominates the Kuiper belt. Over the age of the Solar System, certain regions of the Kuiper belt became destabilised by Neptune's gravity, creating gaps in the Kuiper belt's structure. The region between 40 and 42 AU is an example.
What did Neptune's gravity do to Kuiper belt?

ANS: gaps in the Kuiper belt's structure

QUES: After the bailout was announced, the Portuguese government headed by Pedro Passos Coelho managed to implement measures with the intention of improve the State's financial situation, including tax hikes, a freeze of civil service-related lower-wages and cuts of higher-wages by 14.3%, on top of the government's spending cuts. The Portuguese government also agreed to eliminate its golden share in Portugal Telecom which gave it veto power over vital decisions. In 2012, all public servants had already seen an average wage cut of 20% relative to their 2010 baseline, with cuts reaching 25% for those earning more than 1,500 euro per month.
Who headed the government after the bailout was announced?

ANS: Pedro Passos Coelho

QUES: In 1996, Comcast bought a controlling stake in Spectacor from the company's founder, Ed Snider. Comcast-Spectacor holdings now include the Philadelphia Flyers NHL hockey team, the Philadelphia 76ers National Basketball Association basketball team and two large multipurpose arenas in Philadelphia. Over a number of years, Comcast became majority owner of Comcast SportsNet, as well as Golf Channel and NBCSN (formerly the Outdoor Life Network, then Versus). In 2002, Comcast paid the University of Maryland $25 million for naming rights to the new basketball arena built on the College Park campus, the XFINITY Center. Before it was renamed for Comcast's cable subsidiary, XFINITY Center was called Comcast Center from its opening in 2002 through July 2014.
What did Spectacor buy from Comcast?

ANS:
unanswerable