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Q: Carborundum is a ______ abrasive stone.
  • A. surfacing
  • B. polishing
  • C. robust
  • D. mild
Correct Answer: Option B - Silicon carbide is commonly known as carborundum. • It is used an abrasive for for cutting, grinding and polishing as an antislip additive and as refractory. • It is hard because it has a crystal structure like that of a diamond.
B. Silicon carbide is commonly known as carborundum. • It is used an abrasive for for cutting, grinding and polishing as an antislip additive and as refractory. • It is hard because it has a crystal structure like that of a diamond.

Explanations:

Silicon carbide is commonly known as carborundum. • It is used an abrasive for for cutting, grinding and polishing as an antislip additive and as refractory. • It is hard because it has a crystal structure like that of a diamond.