The most difficult materials riddles A list of materials related questions that are most often answered incorrectly Animals quiz Which animal's hair is a source of mohair?Angora goats have been in Central Asia since Paleolithic. They produce the luxury fiber known as mohair. It is lustrous and shiny, warm in winter as it has excellent insulating properties, while remaining cool in summer due to its moisture wicking properties. Today, South Africa is the world's largest mohair producer, producing around 50% of the total world production. very hard 29% llamallama11%merino sheepmerino sheep25%angora sheepangora sheep33%angora goatangora goat29%Created by: Betty. Statistics based on 3680 answers in 4 languages »fabrics riddles » Which animal's hair is used to make cashmere?Goat. Common usage defines the fiber as a wool but in fact it is a hair, and this is what gives it its unique characteristics as compared to sheep's wool (a hair has a gollow core, while wool does not). Cashmere has been manufactured in Nepal and Kashmir for thousands of years.very hard 31% llamallama40%sheepsheep14%goatgoat31%rabbitrabbit12%Created by: globalquiz.org. Statistics based on 3657 answers in 2 languages »clothes riddles » When was the use of cotton for fabric invented?In prehistory. Cotton was independently domesticated in the Old and New Worlds. Fragments of cotton fabric dated from 5000 BC have been excavated in Mexico and the Indus Valley Civilization. During the late medieval period, cotton became known as an imported fiber in Europe.hard 50% in 10th centuryin 10th century18%in 15th centuryin 15th century17%in 18th centuryin 18th century13%in prehistoryin prehistory50%Created by: globalquiz.org. Statistics based on 5613 answers in 2 languages »history riddles » Which animal's hair is used to make angora wool?Rabbit. 90% of Angora fur is produced in China, where more than 50 million Angora rabbits grow 2,500–3,000 tonnes of angora wool per year. Angora is known for its softness, silky texture, and what knitters refer to as a halo (fluffiness). It is much warmer and lighter than wool due to the hollow core of the angora fibre.hard 54% llamallama21%sheepsheep12%goatgoat11%rabbitrabbit54%Created by: globalquiz.org. Statistics based on 7615 answers in 4 languages »zoology riddles » What kind of material is this cooktop made of?Glass-ceramic materials share many properties with both non-crystalline glass and crystalline ceramics. The negative thermal expansion of the crystalline ceramic phase can be balanced with the positive expansion of the glassy phase. At a certain point (~70% crystalline) the glass-ceramic has a net expansion near zero and can sustain repeated and quick temperature changes up to 1000 °C.average 62% glassglass8%ceramicceramic26%metalmetal3%glass-ceramicglass-ceramic62%Created by: Bob Stanley. Statistics based on 18587 answers in 2 languages »glass riddles » What material are church bells made of?Bronze. The traditional metal for church bells is a bronze of about 23% tin. Steel was tried during the busy church-building period of mid-19th-century England, for its economy over bronze, but was found not to be durable.easy 72% cast ironcast iron10%coppercopper14%bronzebronze72%ceramicsceramics2%Created by: globalquiz.org. Statistics based on 6075 answers in 2 languages »alloys riddles » How can you cut a diamond?Using a diamond. Diamond is a hardest substance in the world and hence as a very strong bonding between the atoms. hence it can be cut only by using a diamond very easy 82% using a knifeusing a knife1%using a diamondusing a diamond82%using goldusing gold3%using a gasusing a gas13%Created by: Shruthi Srinivasan. Statistics based on 2276 answers in 2 languages »gemstones riddles » Play animals quiz and see all the questions.