Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
(a) Diamond
(b) Graphite
(c) Sulphur
(d) Fullerene

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Graphite is an allotrope of carbon can conduct electricity because graphite has free and mobile electrons.

Due to absence of free electron Diamond ,Sulphur, Fullerene are nonconductors.