EOSC CYU Test Questions Solved Correctly Latest Update 2025 Graded A+

EOSC CYU Test Questions Solved Correctly Latest Update 2025 Graded A+ Gold is an: (L24) - Answers Element, noble metal, mineral What are the most important uses of gold today? (L24) - Answers Its most important uses today are in currency and jewellery. What was the first ancient civilization known to use gold? (L24) - Answers Egypt Which lode gold setting provides the most Canadian Gold? (L25) - Answers Mesothermal (Oreogenic) at 83.5% Most orogenic gold deposits were formed during which of the following time periods? (L25) - Answers 600 - 50 Ma, Ma, Ma What type of gold deposit spawned the famous Klondike gold rush? (L26) - Answers Placer Gold About how old are rocks in the Canadian shield? (L26) - Answers 4 billion years old How many elements are there in the PGE group? (L27) - Answers 6 True or False: Platinum group elements (PGEs) tend to have a high density and a high melting point. (L27) - Answers True The Bushveld Complex is the most important platinum group element (PGE) deposit in the world because: (L28) - Answers The complex accounts for 80% of global PGE production From which deposit are most of Canada's PGEs mined from? (L28) - Answers The Sudbury Mine (ON, Canada) True or False: Silver is most commonly mined as the primary resource of a mine. (L29) - Answers False. What do the letters "V", "M", and "S" stand for in VMS deposit? (L29) - Answers Volcanogenic Massive Sulfide The second phase of Canadian silver mining usually depended upon what type of deposit? (L29) - Answers VMS What is the most important property of copper that allows it to be used for many industrial applications? (L30) - Answers High Electrical Conductivity What type of deposit is the majority of copper in Canada found in? (L30) - Answers Porphyry deposits If a mineral resource is close to the surface and extensive in size, which method would you most likely use to extract it? (L31) - Answers Open Pit Placer deposits form when ore is: (L31) - Answers Eroded from its original source and deposited after alluvial transport Consider the Kimberley Process, Fair Trade principles, and the Chain of Custody concept. Which of the following are true statements? (L32) - Answers The Kimberley Process prevents conflict rough diamonds from entering the market. The history of coinage dates back to at least how far?( L34) - Answers 2500 years What country was predicted to be the largest consumer of jewellery in 2015? (L34) - Answers The US V3+ (vanadium) substitutions for Al3+ (aluminum) result in which gemstone variety of beryl? (L15) - Answers Emerald