" A diamond-toothed saw is usually used for cutting: "

A dionond toothed saw is usually used for cutting :

A diamond knife is quite often used for cutting glass. Why ?

Diamond tipped tools are used for drilling and cutting purposes.

(a) What is buckminsterfullerene? How is it related to diamond and graphite? (b) Why is diamond used for making cutting tools (like glass cutters) but graphite is not? (c ) Why is graphite used for making dry cell electrodes but diamond is not?