(a) Diamond
(b) Graphite
(c) Cumene
(d) Buckminsterfullerene
Solution:
Option (c) is the answer.
Cumene (isopropylbenzene) is an aliphatic-substituted aromatic hydrocarbon. Crude oil and refined fuels both contain it. It’s a colourless, flammable liquid with a boiling point of 152°C.
