The IUPAC name for

Options

A. 1-chloro-2-nitro-4-methylbenzene
B. 1-chloro-4-methyl-2-nitrobenzene
C. 2-chloro-1-nitro-5-methylbenzene
D. m-nitro-p-chlorotoluene

Answer

B

Explanation

For tri or higher substituted benzene derivatives, the compounds are named by identifying substituent, positions on the ring by following the lowest locant rule. Substituent of the base compound is assigned number 1 and then the direction of numbering is chosen such that the next substituent gets the lowest number. The substituents appear in the name in alphabetical order.