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exam4_2006 - Exam 4 CEM 151 Name Section PID(Multiple...

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Exam 4 CEM 151 November 29, 2006 Name ___________________ Section __________________ PID _____________________ (Multiple choice, 4 points) 1. Which of the following is a semiconductor? a. InI c. K 3 As e. H 2 S b. InI 3 d. InP f. MgF 2 2. A wider band gap corresponds to a material that has the properties of a a. conductor c. ceramic e. semiconductor g. metal b. Insulator d. polymer f. metal halide 3. Which of the following elements will act as semiconductors in their pure form. 4. Which of the following elements, if doped into silicon would produce an n-type semiconductor. 5. Which of the following elements, if doped into silicon, would produce a p-type semiconductor? 6. Which kinds of materials have exhibited superconductivity? a. Acids c. Metals e. Liquid crystals g. c and f i. b and c b. Ceramics d. Polymers f. b and d h. a, b and c.
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