No, benzene does not form only one type of monosubstituted product. While it's true that all six carbon atoms in benzene are equivalent, different substituents can lead to different isomers.

Here's why:

* Substitution at different positions: A substituent can attach to any of the six carbon atoms in benzene. However, due to the symmetry of the benzene ring, some positions are considered "equivalent."

* Ortho, meta, and para isomers: Depending on the relative positions of the substituent and a second substituent (if present), you can get three different isomers:

* Ortho (o): The substituents are on adjacent carbon atoms (1,2 positions).

* Meta (m): The substituents are separated by one carbon atom (1,3 positions).

* Para (p): The substituents are on opposite sides of the ring (1,4 positions).

Example:

Consider the monosubstitution of benzene with a chlorine atom (chlorobenzene). This can give three different isomers:

* ortho-chlorobenzene

* meta-chlorobenzene

* para-chlorobenzene

Therefore, benzene can form multiple isomers for most monosubstituted products, even if the substituent itself is the same.