Multiple choice

Carborundum is ____.

  1. silicon dioxide

  2. silicon carbide

  3. silicon nitride

  4. silicon phosphide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carborundum is the trade name for silicon carbide (SiC), an extremely hard synthetic abrasive material. Silicon carbide consists of covalently bonded silicon and carbon atoms in a tetrahedral structure, giving it exceptional hardness and thermal conductivity, making it valuable for abrasive and cutting applications.

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