Question:-
Which of the following materials are used in grinding wheels?
1. Aluminium oxide
2. Cubic boron nitride
3. Silicon carbide
Select the correct answer using the codes given below:
Option (A)
1, 2 and 3
Option (B)
1 and 2
Option(C)
2 and 3
Option(D)
1 and 3
Correct Option:
(A)
Question Solution:
In terms of hardness, following material are used in grinding wheel.
Diamond > CBN > SiC > Al2o3
question-answer-faq-8960