• # question_answer ${{C}_{7}}{{H}_{9}}N$ has how many isomeric forms that contain a benzene ring [CPMT 1997, 99; JIPMER 2002; DCE 2003] A) 4 B) 5 C) 6 D) 7

${{C}_{7}}{{H}_{9}}N$ has 5 isomers