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Matse 81 Chapter 7 Quiz With Complete Solutions
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Matse 81 Chapter 7 Quiz With Complete Solutions
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Solution 2024/2025Pepper
Matse 81 Chapter 7 Quiz With Complete
Solutions
According to the course reading, when where the earliest ceramic objects produced?
- Between 34,000 and 30,000 BCE
- Between 39,000 and 35,000 BCE
- Between 24,000 and 20,000 BCE
- Around 18,000 BCE
- Between 29,000 and 25,000 BCE ANS✔✔ between 29,000 and 25,000 BCE
T/F The magnitude of the electrical charge on each of the component ions, and the relative sizes of the cations and
anions, are the two characteristics of the component ions in crystalline ceramic materials which influence their crystal
structure. ANS✔✔ True
T/F In ceramics, anions are positively charged metallic ions. ANS✔✔ False
The cesium chloride crystal structure:
- has cations at corners, a second type of cation at center, and anions at the faces of the cube
- has anions at each of the corners and a cation at the center of a cube
- has atoms at all corner and face positions of the cubic cell, and a second type of atoms filling interior tetrahedral
positions
- has two interpenetrating FCC lattices, one of cations and the other of anions ANS✔✔ has anions at each of the corners
and a cation at the center of a cube
Which are the following classes of carbons (based on applications)?
- clay and nonclay
- diamond, graphite, and fibers
- structural clay products and whitewares
, Solution 2024/2025
Pepper
- glasses, clay products, refractories, abrasives, cements, carbons, and advanced ceramics ANS✔✔ diamond, graphite,
and fibers
Which of these best describes glass-ceramic?
- fine-grained polycrystalline material formed after high-temperature heat treatment of noncrystalline materials
- ceramics composed of noncrystalline silicates containing other oxides
- when mixed with water form a paste that sets and hardens
- possesses unique electrical, magnetic, or optical properties
- able to withstand high temperatures, inert in severe environments, and resistant to thermal shock ANS✔✔ fine-
grained polycrystalline material formed after high-temperature heat treatment of noncrystalline materials
Which of these statements is the best examples of applications of glasses?
- containers, lenses, and fiberglass
- ovenware, electrical insulators, and substrates for electronic applications
- glass furnaces, ferrous foundries, waste incinerators, and ceramic kiln linings
- polishing, lapping, drilling, and buffing
- bricks, tile, sewer pipe, pottery, china, and plumbing fixtures ANS✔✔ containers, lenses, and fiberglass
Which of these best describe nanocarbons?
- ceramics composed of noncrystalline silicates containing other oxides
- when mixed with water form a paste that sets and hardens
- class of recently discovered carbon materials that have novel and exceptional properties
- miniature "smart" systems consisting of a multitude of mechanical devices ANS✔✔ class of recently discovered carbon
materials that have novel and exceptional properties
Which of these best describe carbon nanotube?
- noncrystalline silicates containing other oxides
- single sheet of graphite rolled into a tube
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