Two isomeric aromatic compounds A and B have the molecular formula `C_(7)H_(7)OH`. A gives purple colour with `FeCl_(3)` solution while B does not. What are A and B ?

Explanation

To solve the problem of identifying the two isomeric aromatic compounds A and B with the molecular formula C7H7OH, we can follow these steps:

### Step 1: Understand the Molecular Formula
The given molecular formula is C7H7OH. This indicates that we have an aromatic compound (due to the presence of the benzene ring) with a hydroxyl group (-OH).

### Step 2: Identify Possible Isomers
Since the compounds are isomeric, they will have the same molecular formula but different structural arrangements. The two main types of isomers we can consider are:
- **Phenolic compounds**: where the -OH group is directly attached to a benzene ring.
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