"An alcohol contains one or more hydroxyl-OH groups directly attached to carbon atom(s), of an aliphatic system while a phenol contains -OH group directly attached to carbon atom(s) of an aromatic system."
The above statement is ……

Answer

To analyze the statement provided in the question, we can break it down into parts and evaluate its accuracy regarding the definitions of alcohols and phenols.

### Step 1: Understand the definition of alcohols
- Alcohols are organic compounds that contain one or more hydroxyl (-OH) groups attached to carbon atoms. In alcohols, these carbon atoms are part of an aliphatic system, which means they are part of a straight or branched chain structure.

### Step 2: Understand the definition of phenols
- Phenols are also organic compounds that contain a hydroxyl (-OH) group. However, in phenols, the -OH group is attached to a carbon atom that is part of an aromatic system. Aromatic systems typically involve a ring structure with delocalized pi electrons, such as benzene.

### Step 3: Compare the two definitions
- The statement correctly distinguishes between alcohols and phenols based on the type of carbon atom to which the hydroxyl group is attached. Alcohols have -OH groups on aliphatic carbon atoms, while phenols have -OH groups on aromatic carbon atoms.

### Conclusion
- The statement is **true** as it accurately describes the structural differences between alcohols and phenols.

### Final Answer
The above statement is **true**.

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