ASVAB Science and Tech Practice Questions

Category - Technology/Engineering

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Silicon carbide (SiC), a ceramic, is used in drill bits. Which of the following is the most likely reason that silicon carbide is suitable for this purpose?

It is soft and porous.
It is ductile and magnetic.
It is hard and resists abrasion.
It is brittle and has a low density.

Explanation

Answer: C - It is hard and resists abrasion.

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