6. The chief source of naphthalene is A.Coal-tar B.Diesel C.Charcoal D.Camphor
Answer: Option A Solution: Most naphthalene is derived from coal tar. From the 1960s until the 1990s, significant amounts of naphthalene were also produced from heavy petroleum fractions during petroleum refining, but today petroleum-derived naphthalene represents only a minor component of naphthalene production.
