EAS Chapter 26 Exam Questions and Answers All Correct

EAS Chapter 26 Exam Questions and Answers All Correct 1. Which of the following is a nonmetallic mineral? A. quartz B. gold C. zinc D. lead E. none of these answer - Answer-A. quartz 2. Which characteristics of indium make it such a desirable ingredient in touchscreens and liquid crystal displays? A. hard and flexible B. high melting and boiling points C. soft and malleable D. renewable and plentiful E. all of these answers - Answer-C. soft and malleable 3. Which of the following terms is best described as a naturally occurring chemical compound that exists as a solid with a predictable, three-dimensional, repeating structure? A. metal B. rock C. element D. mineral E. ore - Answer-D. mineral 4. Metals are a critical part of nearly all electronic devices, largely because they are easy to shape and form and because of their ability to: A. emit radioactivity. B. reflect light. C. act as insulators. D. conduct electricity. E. None of these answers is correct. - Answer-D. conduct electricity. 5. Gold and silver are commonly found in which of the following products? A. electronics B. paints C. jewelry D. A, B, and C E. A and C - Answer-E. A and C 6. Which of the following is a rare earth mineral that allowed for color television in the 1960s? A. indium B. tantalum C. neodymium D. palladium E. europium - Answer-E. europium 7. Neodymium is a key ingredient in wind turbines and hybrid car batteries because of its: A. tendency to occur in concentrated deposits. B. extreme magnetic ability. C. ability to produce electric currents with very little material. D. A, B, and C E. B and C - Answer-Answer: E