Question

$C_7{H}_{9}N$ has how many isomeric forms that contain a benzene ring

• A. 4
• B. 5
• C. 6
• D. 7

Answer 1

The correct option is B 5

• Isomeric forms or isomers are molecules or polyatomic ions with identical molecular formulas — that is, the same number of atoms of each element — but distinct arrangements of atoms in space.
• Here, for the given formula $\left(C_7{H}_{9}N\right)$ there is five isomeric forms that contain a benzene ring.

Hence, option B is correct.