How many isomers are possible for monosubstituted and disubstituted benzene?

Explanation

To determine the number of isomers possible for monosubstituted and disubstituted benzene, we can follow these steps:

### Step 1: Understanding Monosubstituted Benzene
- Monosubstituted benzene refers to a benzene ring that has one substituent (like a halogen, alkyl group, etc.) attached to it.
- Regardless of the type of substituent, there is only one way to substitute a single group onto the benzene ring.

**Conclusion for Monosubstituted Benzene:**
- There is only **1 isomer** for monosubstituted benzene.
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