10 most difficult colors riddles A list of ten (out of 23) colors related questions that are the most often answered incorrectly Colors quiz For what main reason do chameleons change color? As a social signal to othe chameleons. Color change in chameleons has various functions, depending on the species, but the most common is social signaling. Only few species, such as Smith's dwarf chameleon, also adjust their colors for camouflage. very hard 20% to match their surroundingsto match their surroundings52%as a social signal to othe chameleonsas a social signal to othe chameleons20%their skin change color when pressedtheir skin change color when pressed5%chameleons do not change colorchameleons do not change color20%Created by: globalquiz.org. Statistics based on 7699 answers in 4 languages »reptiles riddles » 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 quartz36%it is an optical illusionit is an optical illusion22%Created by: Debbie Fox. Statistics based on 13279 answers in 4 languages »soil riddles » How are white pigments used in paints called?Lithopone, a mixture of barium sulfate and zinc sulfide, is widely used as a white pigment powder for paints, putties and plastics. Approximately 220,000 tons of lithopone were produced in 1990. very hard 31% LimeLime34%FlavonesFlavones19%LithoponeLithopone31%OchreOchre14%Created by: Paweł Kołodziejczyk. Statistics based on 3638 answers in 2 languages »chemistry riddles » What was the original color of Hulk (Marvel Hero)Grey. Hulk first appear in 1962's Comic by Stan Lee and Jack Kirby. Hulk was grey, but was that problematic when printing a comic.very hard 35% GreyGrey35%BlackBlack4%RedRed13%Hulk always been greenHulk always been green46%Created by: MilosTwine. Statistics based on 1159 answers in 2 languages »fairy tales riddles » Which country did these silver sport cars represent?Germany. For decades until the introduction of sponsorship liveries, each country had its traditional color in automobile racing. Italian race cars were red (still used by Ferrari), British ones green, and French blue. Today, Mercedes-Benz Formula One cars are also silver.hard 46% GermanyGermany46%FranceFrance11%ItalyItaly17%Great BritainGreat Britain25%Created by: globalquiz.org. Statistics based on 18640 answers in 2 languages »races riddles » Which color has the greatest albedo?White. Albedo in Latin is simply "whiteness". It is the reflecting power of a surface - the ratio of reflected radiation from the surface to incident radiation upon it.hard 46% whitewhite46%blueblue15%redred24%blackblack12%Created by: Paweł Kołodziejczyk. Statistics based on 6478 answers in 2 languages »climate riddles » Which chemical element forms compounds which are typically intensely colored?Chromium. The name of chromium means colour in Greek. Its compounds are used as pigments, including chrome yellow which had been used to paint school buses and chromium oxides used as a green color in glassmaking. Natural rubies are colored red due to chromium ions.hard 49% zinczinc20%lithiumlithium16%chromiumchromium49%vanadiumvanadium13%Created by: life-o-holic. Statistics based on 14000 answers in 4 languages »Latin riddles » What is the colour of a flight recorder, commonly known as a black box?Orange. Although it is called the black box it's actuall orange-coloured because it's easier to find when an accident occurs. The device that is installed in most of civil aircrafts these days was designed by an Australian engineer David Warren.hard 50% blackblack11%yellowyellow17%redred20%orangeorange50%Created by: . Statistics based on 132 answers in 2 languages »science riddles » Is this a male, or a female cat?A female. This kind of coat coloring, which combines two colors other than white (black and red in this case), is known as tortoiseshell, and it is found almost exclusively in female cats. This is because the X chromosome determines the color of the cat, and there are no color genes in Y chromosome. Thus, female cats with XX chromosomes may be three colored (including white), while male cats with XY chromosomes cannot. (with the exception of very rare XXY sterile males).hard 54% a malea male15%a femalea female54%it is not possible to tellit is not possible to tell27%it is not a cat at allit is not a cat at all3%Created by: Sara Amoncio. Statistics based on 25997 answers in 4 languages »genetics riddles » The rainbow is violet on the inside of its arc. What color is it on the outside?Red. Visible light spans from red to violet. It is easy to remember, since wavelengths just outside the visible range are called infrared and ultraviolet.hard 55% blueblue15%greengreen9%yellowyellow19%redred55%Created by: Hà Linh Chi. Statistics based on 19983 answers in 2 languages »optics riddles » Play colors quiz and see all the questions.