Which of the Following Statements About Ceramics Is Incorrect

question 77

Multiple Choice

Which of the following statements about ceramics is incorrect?

• A)Silicon carbide has a diamond-like structure.
• B)Boron nitride can exist in both diamond-like and graphite-like forms.
• C)Silicon carbide can be prepared by direct reaction of silicon and carbon.
• D)Superconducting ceramics present manufacturing difficulties owing to their brittleness.
• E)Superconducting ceramic compounds usually incorporate cobalt in a key role.

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Definitions:

Seismographs

Instruments that measure and record details of earthquakes, such as force and duration, by detecting ground motion.

Tsunami

Enormously long oceanic waves generated by major events like quakes, volcano eruptions, or subaquatic landslides.

P-Wave

A type of seismic wave that compresses and expands material in the direction it is traveling, and is the fastest kind of seismic wave.

Rogue Wave

A large, unexpected, and suddenly appearing surface wave that can be extremely dangerous, even to large ships.