Question: Polyols, compounds containing more than one alcohol functional group, generally interact with cupric salts. For example, copper salts are used to test for reducing sugars. Specifically, using Benedict's reagent and Fehling's solution the presence of the sugar is signaled by a color change from blue Cu(II) to reddish copper(I) oxide. Schweizer's reagent and related complexes with ethylenediamine and other amines dissolve cellulose. Amino acids form very stable chelate complexes with copper(II). Many wet-chemical tests for copper ions exist, one involving potassium ferrocyanide, which gives a brown precipitate with copper(II) salts.
Is there an answer to this question: How is the presence of sugar hidden by using Benedict's reagent and Fehling's solution?

Answer: unanswerable


Question: Congress often writes legislation to restrain executive officials to the performance of their duties, as laid out by the laws Congress passes. In INS v. Chadha (1983), the Supreme Court decided (a) The prescription for legislative action in Art. I, § 1—requiring all legislative powers to be vested in a Congress consisting of a Senate and a House of Representatives—and § 7—requiring every bill passed by the House and Senate, before becoming law, to be presented to the president, and, if he disapproves, to be repassed by two-thirds of the Senate and House—represents the Framers' decision that the legislative power of the Federal Government be exercised in accord with a single, finely wrought and exhaustively considered procedure. This procedure is an integral part of the constitutional design for the separation of powers. Further rulings clarified the case; even both Houses acting together cannot override Executive vetos without a 2⁄3 majority. Legislation may always prescribe regulations governing executive officers.
Is there an answer to this question: When was INS v Chadha tried before the Supreme Court?

Answer: 1983


Question: In mid-2015, several new color schemes for all of the current iPod models were spotted in the latest version of iTunes, 12.2. Belgian website Belgium iPhone originally found the images when plugging in an iPod for the first time, and subsequent leaked photos were found by Pierre Dandumont.
Is there an answer to this question: What version of iTunes contained the leaked photos of new iPod colors?

Answer: 12.2


Question: The deeper ancestral demography of Bermuda's population has been obscured by the ethnic homogenisation of the last four centuries. There is effectively no ethnic distinction between black and white Bermudians, other than those characterising recent immigrant communities. In the 17th century, this was not so. For the first hundred years of settlement, white Protestants of English heritage were the distinct majority, with white minorities of Irish (the native language of many of whom can be assumed to have been Gaelic) and Scots sent to Bermuda after the English invasions of their homelands that followed the English Civil War. Non-white minorities included Spanish-speaking, free (indentured) blacks from the West Indies, black chattel slaves primarily captured from Spanish and Portuguese ships by Bermudian privateers, and Native Americans, primarily from the Algonquian and other tribes of the Atlantic seaboard, but possibly from as far away as Mexico. By the 19th century, the white ethnically-English Bermudians had lost their numerical advantage. Despite the banning of the importation of Irish, and the repeated attempts to force free blacks to emigrate and the owners of black slaves to export them, the merging of the various minority groups, along with some of the white English, had resulted in a new demographic group, "coloured" (which term, in Bermuda, referred to anyone not wholly of European ancestry) Bermudians, gaining a slight majority. Any child born before or since then to one coloured and one white parent has been added to the coloured statistic. Most of those historically described as "coloured" are today described as "black", or "of African heritage", which obscures their non-African heritage (those previously described as "coloured" who were not of African ancestry had been very few, though the numbers of South Asians, particularly, is now growing. The number of persons born in Asian countries doubled between the 2000 and the 2010 censuses), blacks have remained in the majority, with new white immigration from Portugal, Britain and elsewhere countered by black immigration from the West Indies.
Is there an answer to this question: Who was the minority for the first 17 years of the settlement?

Answer:
unanswerable