Isopropyl benzene is oxidised in the presence of air to a compound 'A'. When compound 'A' is treated with dilute mineral acid, the armatic product formed is :

Options

A. phenol
B. benzene
C. Benzaldehyde
D. acetophenone.

Explanation

To solve the problem, we need to follow these steps:

### Step 1: Identify the starting compound
The starting compound is isopropyl benzene, also known as cumene. Its structure can be represented as follows:
- It consists of a benzene ring (C6H5) attached to an isopropyl group (C3H7).

### Step 2: Oxidation of isopropyl benzene
When isopropyl benzene is oxidized in the presence of air (oxygen), it undergoes a reaction that leads to the formation of a hydroperoxide compound. The oxidation of isopropyl benzene (cumene) typically results in the formation of cumene hydroperoxide (compound A).

The reaction can be summarized as:
\[ \text{C6H5C(CH3)2} + O_2 \rightarrow \text{C6H5C(CH3)2O-OH} \]

### Step 3: Treatment with dilute mineral acid
When compound A (cumene hydroperoxide) is treated with dilute mineral acid (like HCl or H2SO4), it undergoes hydrolysis. This reaction leads to the cleavage of the O-O bond and the formation of phenol and acetone.

The reaction can be summarized as:
\[ \text{C6H5C(CH3)2O-OH} \xrightarrow{\text{dilute acid}} \text{C6H5OH (phenol)} + \text{(CH3)2CO (acetone)} \]

### Step 4: Identify the aromatic product
The aromatic product formed from the hydrolysis of compound A is phenol (C6H5OH).

### Final Answer
The aromatic product formed is **phenol**.

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