1M03 2009 ASSIGNMENT 6-2 ¿¯

1M03 2009 ASSIGNMENT 6-2...

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View Results Name: SOO NAM Attempt: 2 / 3 Out of: 20 Started: April 4, 2009 8:45pm Finished: April 4, 2009 9:09pm Time spent: 24 min. 25 sec. Student finished 479 hr, 35 min., 35 sec. ahead of the 28800 min. time limit. Question 1 (1 point) True or False? Most copper alloys can be hardened by heat treatment. Student response: Correct Response Student Response Answer Choices a. True b. False General feedback: False . Most copper alloys cannot be hardened by heat treatments. They are normally hardened by cold working and/or by solid solution strengthening. For more information, see the section on Nonferrous Alloys in the text. Score: 1 / 1 Question 2 (1 point) Powder metallurgy is normally used for which of the following: Student response: Correct Response Student Response Answer Choices a. Metals that have high melting temperatures. b. Metals that have low melting temperatures. General feedback: Powder metallurgy is normally used for metals that have high melting temperatures . For more information, see the section on Miscellaneous Techniques in the text. Score: 1 / 1 Question 3 (1 point) True or False? For precipitation hardening, the solution heat treatment consists of (1) heating the alloy to a temperature at which all solute atoms are dissolved and form a single-phase solution, and (2) quenching to produce a nonequilibrium solid solution. Student response: Correct Response Student Response Answer Choices a. True b. False General feedback: True . For more information, see the section on Precipitation Hardening in the text. Score: 0 / 1 Question 4 (1 point) Name the term used for the configuration of a stereoisomer that has R groups randomly positioned on either side of the ca backbone chain. Student response:
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Correct Response Student Response Answer Choices a. cis b. isotactic c. atactic d. trans e. syndiotactic General feedback: For more information, see the section on Molecular Configurations : Stereoisomerism in the Polymer Structures chapter of the text. Score: 1 / 1 Question 5 (1 point) Which group below only includes materials which may form crosslinked polymers ? Student response:
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This note was uploaded on 04/04/2011 for the course MATLS 1M03 taught by Professor Okon during the Spring '09 term at McMaster University.

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1M03 2009 ASSIGNMENT 6-2...

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