Question

77 ) Mention the appropriate term corresponding to following sentence

(iv) The hardest compound of silicon used in all kinds of grinding wheels

Answer 1

• Silicon Carbide $\left(\mathrm{SiC}\right)$ is the hardest compound of silicon used in all kinds of grinding wheels.
• Silicon carbide is produced synthetically.
• Commonly it is known as carborundum.
• It is used in milling iron like hard metals.