Question:-
Which one of the following is the hardest cutting tool material next only to diamond?
Option (A)
Cemented carbides
Option (B)
Ceramics
Option(C)
Silicon
Option(D)
Cubic boron nitride
Correct Option:
(D)
Question Solution:
Order of hardness of tool.
Diamond > Cubic boron nitride > Silicon Cemented carbide > Ceramics
question-answer-faq-8955