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Zinc is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium: its ion is of similar size and its only common oxidation state is +2. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest mineable amounts are found in Australia, Asia, and the United States. Zinc production includes froth flotation of the ore, roasting, and final extraction using electricity (electrowinning).
What is the most common zinc ore?
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The answer: sphalerite


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Rajasthan (/ˈrɑːdʒəstæn/ Hindustani pronunciation: [raːdʒəsˈt̪ʰaːn] ( listen); literally, "Land of Kings") is India's largest state by area (342,239 square kilometres (132,139 sq mi) or 10.4% of India's total area). It is located on the western side of the country, where it comprises most of the wide and inhospitable Thar Desert (also known as the "Rajasthan Desert" and "Great Indian Desert") and shares a border with the Pakistani provinces of Punjab to the northwest and Sindh to the west, along the Sutlej-Indus river valley. Elsewhere it is bordered by the other Indian states: Punjab to the north; Haryana and Uttar Pradesh to the northeast; Madhya Pradesh to the southeast; and Gujarat to the southwest. Its features include the ruins of the Indus Valley Civilization at Kalibanga; the Dilwara Temples, a Jain pilgrimage site at Rajasthan's only hill station, Mount Abu, in the ancient Aravalli mountain range; and, in eastern Rajasthan, the Keoladeo National Park near Bharatpur, a World Heritage Site known for its bird life. Rajasthan is also home to two national tiger reserves, the Ranthambore National Park in Sawai Madhopur and Sariska Tiger Reserve in Alwar.
What province in Pakistan does Rajasthan border on its north?
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The answer: Punjab


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West is one of the best-selling artists of all time, having sold more than 32 million albums and 100 million digital downloads worldwide. He has won a total of 21 Grammy Awards, making him one of the most awarded artists of all time and the most Grammy-awarded artist of his age. Three of his albums rank on Rolling Stone's 2012 "500 Greatest Albums of All Time" list; two of his albums feature at first and eighth, respectively, in Pitchfork Media's The 100 Best Albums of 2010–2014. He has also been included in a number of Forbes annual lists. Time named him one of the 100 most influential people in the world in 2005 and 2015.
What popular magazine placed Kanye on their annual list in 2005 and 2015?
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The answer: Time


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Miami International Airport and PortMiami are among the nation's busiest ports of entry, especially for cargo from South America and the Caribbean. The Port of Miami is the world's busiest cruise port, and MIA is the busiest airport in Florida, and the largest gateway between the United States and Latin America. Additionally, the city has the largest concentration of international banks in the country, primarily along Brickell Avenue in Brickell, Miami's financial district. Due to its strength in international business, finance and trade, many international banks have offices in Downtown such as Espírito Santo Financial Group, which has its U.S. headquarters in Miami. Miami was also the host city of the 2003 Free Trade Area of the Americas negotiations, and is one of the leading candidates to become the trading bloc's headquarters.
What is Florida's busiest airport?
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The answer:
Miami International