Q

# Give reasons: Diamond is used as an abrasive.

11.22.    Give reasons :

(iv) Diamond is used as an abrasive.

The carbons of the diamond are in $sp^3$ hybridisation. Each carbon is attached with the four neighbour carbon atom by a strong covalent bond. This covalent bond gives the diamond a very rigid structure and it is very difficult to break this covalent bond and due to this reason it is the hardest substance and used as an abrasive