The most difficult natural resources riddles A list of natural resources related questions that are most often answered incorrectly Technology quiz Why is White Sands Desert in New Mexico so purely white?It is gypsum. White Sands, having 442 total square kilometers of dune fields, is the world's largest surface deposit of gypsum. Unlike other desert sands, it is cool to the touch, due to the high rate of evaporation of surface moisture and the fact that the sands reflect, rather than absorb, the sun's rays.very hard 30% it is gypsumit is gypsum30%it is very fine grained sandit is very fine grained sand10%it iswhite quartzit iswhite quartz35%it is an optical illusionit is an optical illusion22%Created by: Debbie Fox. Statistics based on 12403 answers in 4 languages »soil riddles » Where are emeralds found the most?In Colombia. Colombia is by far the world's largest producer of emeralds, constituting 50–95% of the world production. The Colombian emeralds are also the purest. The emerald trade is at the center of funding of ongoing civil conflict in Colombia, second to drug trade.hard 41% in South Africain South Africa37%in Colombiain Colombia41%in Siberiain Siberia10%in Argentinain Argentina10%Created by: globalquiz.org. Statistics based on 10145 answers in 2 languages »Colombia riddles » Which country is the top natural gas producer in the European Union?The Netherlands. 50% of the natural gas production in the Netherlands comes from the Groningen Gas Field, being the largest natural gas field in Europe and the tenth largest in the world. The other 50% being supplied by around 300 smaller fields, mostly in the North Sea.hard 42% United KingdomUnited Kingdom25%The NetherlandsThe Netherlands42%ItalyItaly10%FranceFrance22%Created by: Kasia. Statistics based on 10195 answers in 2 languages »UE riddles » What kind of crude oil is better? (more expensive)Sweet crude oil contains small amounts of hydrogen sulfide (in contrast to sour crude oil). Low-sulfur crude oil is in high demand as it is used to produce high-quality gasoline without the need for expensive processes of removing sulfur impurities. The term "sweet" originates from the fact that a low level of sulfur provides the oil with a mildly sweet taste and pleasant smell. Nineteenth century prospectors would taste and smell small quantities of oil to determine its quality.hard 44% sweet crude oilsweet crude oil44%sour crude oilsour crude oil17%salty crude oilsalty crude oil12%bitter crude oilbitter crude oil25%Created by: globalquiz.org. Statistics based on 10768 answers in 2 languages »Saudi Arabia riddles » Which country is the global leader in aluminium production?China. People's Republic of China is the top producer of aluminium with almost a one-fifth world share. It heavily outranks other countries, producing five times as much as the second place holder - Russia.hard 51% ChinaChina51%CanadaCanada17%United StatesUnited States12%RussiaRussia18%Created by: Kasia. Statistics based on 18309 answers in 2 languages »country records riddles » Which country is the global leader in copper production?Chile outranks all other producers of copper, having at least one-third world share. The copper industry is located in the Atacama Desert in northern part of the country.hard 55% United StatesUnited States8%RussiaRussia15%ChileChile55%PolandPoland20%Created by: Kasia. Statistics based on 18593 answers in 2 languages »Chile riddles » Which type of a coal is the youngest?Lignite (brown coal). Coal forms when the dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, then bituminous coal, and lastly anthracite.hard 57% lignite (brown coal)lignite (brown coal)57%graphitegraphite14%bituminous coalbituminous coal12%anthraciteanthracite15%Created by: Kasia. Statistics based on 9242 answers in 2 languages »minerals riddles » Play technology quiz and see all the questions.