Final answer:
Chlorobenzene could be produced by the reaction of benzene with FeCl3, which is option a. It has a molecular formula of C6H5Cl, which is option c. Chlorobenzene is not a polycyclic aromatic compound nor is it meta substituted, which eliminates options b and d.
Step-by-step explanation:
chlorobenzene could be produced by the reaction of benzene with FeCl3. This is because the treatment of benzene with a halogen in the presence of an iron catalyst, such as FeCl3, causes the substitution of a halogen atom for a hydrogen atom. The resulting molecule in this case would be an aryl halide, specifically chlorobenzene. Therefore, option a. is correct.
Chlorobenzene is not a polycyclic aromatic compound, but rather a monocyclic one, because it consists of only one benzene ring. Thus, option b. is incorrect.
The molecular formula of chlorobenzene is C6H5Cl. Each molecule consists of a benzene ring with one chlorine atom replacing one hydrogen atom, confirming option c. is correct.
Regarding the substitution pattern, "meta substituted" would mean that the substituents are separated by a single carbon within the ring. Chlorobenzene has only one substituent, the chlorine atom, so it is not meta-substituted. Therefore, option d. does not apply to chlorobenzene.