If the number of isomeric forms of C 7 H 9 N is ' X ' and the number of compounds with the chiral centre is ' Y ' , then the ratio of ' X ' and ' Y ' is (all isomeric forms contain a benzene ring):

Step-by-step solution

The isomeric forms of C 7 H 9 N are: The number of isomeric forms is 5 . Chiral centre is the centre of the atom which contains four different valencies. Nitrogen consists of three different groups along with one lone pair. Therefore, the given structure consists of one chiral nitrogen atom.