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ENGR 250 Final Exam Review Questions with Correct Answers
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ENGR 250 Final Exam Review Questions with Correct Answers
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ENGR 250 Final Exam Review Questions with Correct AnswersMaterials Science and Engineering is the study of material behavior & performance and how this is simultaneously related to structure, properties, and processing. Which of the following is the best example of a material property?
(a) Density (b) Annealing (c) Forging (d) Single-crystal (e) Crystalline Correct Answer-(a) Density
Which class of material is generally associated with the highest density values at room temperature?
(a) Composites (b) Ceramics (c) Metals (d) Polymers (e) Amorphous Correct Answer-(c) Metals
Commonly, the electrical resistivity of polymers is ............... the electrical resistivity of metallic materials.
(a) greater than (b) less than (c) equal to (d) less than or equal to (e) none of the above Correct Answer-(a) greater than
The technologically important material carbon fiber-reinforced polymer (CFRP) is a/an (a) Polymer (b) Alloy (c) Composite (d) Nanomaterial (e) Biomaterial Correct Answer-(c) Composite
Ideally speaking, bonds tend to form between two particles such that they are separated by a distance where _______ net force is exerted on them, and their overall energy is _________. (a) a positive, maximized (b) a negative, maximized (c) a positive, minimized (d) zero, maximized (e) zero, minimized Correct Answer-(e) zero, minimized
_________ bonds are the only primary bonds that are directionally dependent.
(a) Covalent (b) Metallic (c) Ionic (d) Van der Waals (e) Hydrogen Correct Answer-(a) Covalent
Materials whose constituent particles are bound by which type of bond are generally expected to have the lowest melting temperatures? (a) Covalent (b) Metallic (c) Ionic (d) Ionic-covalent (e) Van der Waals Correct Answer-(e) Van der Waals
_________ bonds are responsible for binding atoms together within a molecule of propane (C3H8 , pictured below), whereas ________ bonds bind propane molecules together in a liquid or crystalline state.
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