Which one of the following materials is closest to diamond in hardness:
A)aluminum oxide
B)carbon dioxide
C)cubic boron nitride
D)silicon dioxide
E)tungsten carbide

Name: Which one of the following materials is closest to diamond in hardness: A)aluminum oxide B)carbon dioxide C)cubic boron nitride D)silicon dioxide E)tungsten carbide
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Question

Quizplus · Accepted Answer

Cubic boron nitride is the second hardest material known after diamond, making it the closest in hardness to diamond among the options listed.

Which One of the Following Materials Is Closest to Diamond