Brass, which is an alloy of copper and zinc, has been used since at least the 10th century BC in Judea and by the 7th century BC in Ancient Greece. Zinc metal was not produced on a large scale until the 12th century in India and was unknown to Europe until the end of the 16th century. The mines of Rajasthan have given definite evidence of zinc production going back to the 6th century BC. To date, the oldest evidence of pure zinc comes from Zawar, in Rajasthan, as early as the 9th century AD when a distillation process was employed to make pure zinc. Alchemists burned zinc in air to form what they called "philosopher's wool" or "white snow". COUNT 10
QSN1 What two metals are mixed to create Brass? ANS1 copper and zinc QSN2 When was brass first used? ANS2 10th QSN3 Where was zinc first produced on a large scale? ANS3 India QSN4 When was zinc introduced to Europe? ANS4 end of the 16th century QSN5 Where is the oldest evidence of pure zinc? ANS5 Zawar QSN6 Brass is an alloy of what two elements? ANS6 copper and zinc QSN7 The earliest uses of brass has been attributed to what ancient location? ANS7 Judea QSN8 We have evidence of zinc production dating back to the 6th century thanks to what mine? ANS8 Rajasthan QSN9 What early process was used to make zinc? ANS9 distillation process QSN10 What were the names given to zinc by early alchemists? ANS10 "philosopher's wool" or "white snow"