Naphthalene is the simplest polycyclic aromatic hydrocarbon. Nephthalene and NaCl both are crystalline solids but naphthalene has a characteristic odour that is detectable at concentration as low as 0.08 ppm by mass. Mixture of naphthalene and sodium chloride can easily be separarted by :–
(a) fractional distillation
(b) steam distillation
(d) crystallisation
(d) Sublimation
