10 most difficult technology riddles A list of ten (out of 179) technology related questions that are the most often answered incorrectly Technology quiz What does the logo of Citroën symbolize?Toothed in gearwheels. The company founded by André Gustave Citroën was involved in the production of gear and transmission. It was created on the basis of patent for toothed wheel that Andre bought in Poland.very hard 21% Spruce, typical for the VosgesSpruce, typical for the Vosges18%Toothed in gearwheelsToothed in gearwheels21% Arrow up - striving for perfection Arrow up - striving for perfection42%Shoemakers pointing to the military connections of the companyShoemakers pointing to the military connections of the company17%Created by: Katarzyna Dąbrowska. Statistics based on 5346 answers in 2 languages »logo riddles » What is the third, after nitrogen and oxygen, component of dry air?Argon represents 0.934% of the earth's atmosphere and 1.28% of its mass. Ar-40 is an isotope that makes up the majority of the earth's argon. It is a result of decaying of another elements' unstable isotopes, mainly Potassium-40.very hard 24% carbon dioxidecarbon dioxide52%methanemethane3%ozoneozone18%argonargon24%Created by: Rafał. Statistics based on 3255 answers in 2 languages »chemistry riddles » The first woman (aviator) taking active part in hostilities is;Sabiha Gökçen - Turkish woman. Sabiha Gökçen was a Turkish aviator. She was the first Turkish female combat pilot, aged 23. According to some sources, including Guinness World Records, she was also the world's first female fighter pilot, being enrolled in the Military Aviation Academy in Eskisehir in 1936. very hard 25% Komako Kimura - Japanese womanKomako Kimura - Japanese woman9%Sabiha Gökçen - Turkish womanSabiha Gökçen - Turkish woman25%Harriet Quimby - American womanHarriet Quimby - American woman33%Anna Leska-Daab - Polish womanAnna Leska-Daab - Polish woman31%Created by: Tschuka. Statistics based on 105 answers in 2 languages »women riddles » What country have got most yearly polar stations in Antarctica? (2017)Argentina have got most yearly polar stations - 6|Chile - 5|Russia - 5|Poland - 1very hard 26% ArgentinaArgentina26%ChileChile13%PolandPoland16%RussiaRussia43%Created by: lukasz Poland. Statistics based on 488 answers in 2 languages »country records riddles » Are gas fittings tightened clockwise or anti-clockwise?It depends on the gas. Some gas fittings use reverse threads to prevent disastrous misconnections. For example, oxygen fittings are right-handed, but acetylene and other flammable gases use left-handed fittings.very hard 28% clockwiseclockwise23%anti-clockwiseanti-clockwise39%it depends on the gasit depends on the gas28%there is no standardthere is no standard8%Created by: globalquiz.org. Statistics based on 4254 answers in 4 languages »gases riddles » What is the most common element (by mass) forming the planet Earth?Iron is most abundant in the Earth's outer and inner core, and it is the fourth most common element in the Earth's crust.very hard 29% carboncarbon28%oxygenoxygen20%ironiron29%siliconsilicon20%Created by: globalquiz.org. Statistics based on 8951 answers in 2 languages »Earth riddles » Use of brown powder was one of the major naval artillery improvements of the late 19th century. What was its advantage over black powder?It burns slower. The introduction of brown powder, which burned less rapidly than black powder, allowed to use longer barrels, which resulted in greater accuracy. Slower-burning powder decreases firing stresses, allowing guns to last longer and to be manufactured to tighter tolerances.very hard 29% it burns slowerit burns slower29%it burns quickerit burns quicker15%it is water-resistantit is water-resistant40%it is more explosiveit is more explosive14%Created by: globalquiz.org. Statistics based on 6653 answers in 2 languages »navy riddles » Who discovered the rubber vulcanization process?Charles Goodyear for many years improved the method of hardening the rubber. When he succeeded in 1839, investors were already offended by earlier failures. Charles died in misery, and Goodyear company, named in his honor, has nothing to do with him.very hard 30% Charles GoodyearCharles Goodyear30%John Boyd DunlopJohn Boyd Dunlop25%Edouard MichelinEdouard Michelin29%Giovanni Battista PirelliGiovanni Battista Pirelli13%Created by: GabrielBaran. Statistics based on 12607 answers in 2 languages »tires riddles » Which size of sheet of paper is 0,5 m²A1. According to international standard ISO216 one of the three basic series of formats is A series, in which the ratio of the sides is 1 to √2, and the length of the sides are chosen so that the format A0 has a surface of 1m². Smaller formats result from the distribution of sheets in the middle of the longer side, thus maintaining proportions. As a result, the sheet A0 consists of 2 sheets A1, A1 of two sheets A2,very hard 30% A1A130%A4A424%A0A015%NoneNone29%Created by: Katarzyna Dąbrowska. Statistics based on 4599 answers in 2 languages »geometry riddles » What was the main weakness of Colt revolvers, comparing to its competitors?Lack of possibility to use metallic cartridges. Samuel Colt missed a great opportunity in firearms development when he dismissed an idea from one of his gunsmiths, Rollin White. White proposed a "bored-through" revolver cylinder to allow the use of metallic cartridges in a handgun. After Colt fired White for suggesting an improvement to his revolver, White took his idea to Colt's competitor, Smith & Wesson, who patented his invention and kept Colt from being able to build cartridge firearms for almost 20 years.very hard 31% low speedlow speed28%low durabilitylow durability11%lack of possibility to use metallic cartridgeslack of possibility to use metallic cartridges31%poor shooting precisionpoor shooting precision28%Created by: globalquiz.org. Statistics based on 9228 answers in 4 languages »firearms riddles » Play technology quiz and see all the questions.