Materials questions This is a list of recently added questions about materials. 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 Created by: Shruthi Srinivasaneasy 79% using a knifeusing a knife56using a diamondusing a diamond3412using goldusing gold135using a gasusing a gas686gemstones 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.Created by: globalquiz.orghard 50% in 10th centuryin 10th century1094in 15th centuryin 15th century1062in 18th centuryin 18th century830in prehistoryin prehistory3008history riddles » 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. Created by: Bettyvery hard 29% llamallama468merino sheepmerino sheep1059angora sheepangora sheep1359angora goatangora goat1187fabrics 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.Created by: globalquiz.orgvery hard 31% llamallama1681sheepsheep581goatgoat1256rabbitrabbit506clothes 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.Created by: globalquiz.orghard 54% llamallama1848sheepsheep1038goatgoat909rabbitrabbit4521zoology 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.Created by: globalquiz.orgeasy 71% cast ironcast iron692coppercopper1027bronzebronze4804ceramicsceramics184alloys 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.Created by: Bob Stanleyaverage 62% glassglass1656ceramicceramic5256metalmetal605glass-ceramicglass-ceramic12329glass riddles » Play animals quiz and see all the questions.