Cumene process is the most important commercial method for the manufacture of phenol. Cumene is

Options

A. iso-propyl benzene
B. ethyl benzene
C. vinyl benzene
D. propyl benzene .

Explanation

To solve the question regarding the Cumene process and identify what cumene is, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Cumene**:
- Cumene is a compound used in the production of phenol. It is important to know its chemical structure to answer the question correctly.

2. **Identifying the Structure of Cumene**:
- Cumene is composed of a benzene ring with an isopropyl group attached to it. The isopropyl group has the formula \( \text{C}_3\text{H}_7 \) and can be represented as \( \text{(CH}_3)_2\text{CH-} \).

3. **Chemical Formula of Cumene**:
- The chemical formula for cumene is \( \text{C}_9\text{H}_{12} \), which corresponds to isopropylbenzene.

4. **Analyzing the Given Options**:
- The options provided are:
- A) Isopropyl benzene
- B) Ethyl benzene
- C) Vinyl benzene
- D) Propyl benzene
- Among these options, we need to identify which one corresponds to the structure of cumene.

5. **Selecting the Correct Option**:
- Since cumene is defined as isopropylbenzene, the correct answer from the options is:
- **A) Isopropyl benzene**.

### Final Answer:
Cumene is **isopropyl benzene**.

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