A. Silicon carbide
B. Corundum
C. Aluminium oxide
D. Boron carbide
Correct Answer: Aluminium oxide ✔
Last Updated: February 08, 2019
A. Silicon carbide
B. Corundum
C. Aluminium oxide
D. Boron carbide
Correct Answer: Aluminium oxide ✔
Last Updated: February 08, 2019