question_answer

\[{{C}_{7}}{{H}_{9}}N\] has how many isomeric forms that contain a benzene ring?  

A) 4                                 

B) 5   

C) 6                                 

D) 7

Correct Answer: B

Solution :

[b] \[{{C}_{7}}{{H}_{9}}N\] having one benzene ring may be represented as \[{{C}_{6}}{{H}_{5}}C{{H}_{4}}N\] may be in the form of \[1{}^\circ \] and \[2{}^\circ \] amines in the following five isomeric forms.