Which of the following statements `is//are` correct?

Options

A. The common name of benzene-1,2-diol is catechol.
B. The common name of benzene-1,3-diol is resorinol.
C. The common name of benzene-1,4-diol is quinol.
D. The common name of benzene -1,4-diol is hydroquinone

Answer

To determine which of the statements are correct regarding the common names of certain organic compounds, we can analyze each statement step by step.

### Step 1: Identify the compounds mentioned
1. **Benzene 1,2-diol** - This compound is commonly known as **catechol**.
2. **Benzene 1,4-diol** - This compound is commonly known as **hydroquinone** or **quinol**.

### Step 2: Evaluate the statements
1. **Statement 1**: The common name of benzene 1,2-diol is catechol.
- This statement is **correct**.

2. **Statement 2**: The common name of benzene 1,4-diol is resorcinol.
- This statement is **correct**. Resorcinol is indeed the common name for benzene 1,4-diol.

3. **Statement 3**: The common name of benzene 1,4-diol is phenol.
- This statement is **incorrect**. Phenol refers to a different compound (benzene with one hydroxyl group).

4. **Statement 4**: The common name of benzene 1,4-diol is hydroquinone.
- This statement is **correct**. Hydroquinone is another name for benzene 1,4-diol.

### Conclusion
- The correct statements are:
- The common name of benzene 1,2-diol is catechol (Correct).
- The common name of benzene 1,4-diol is resorcinol (Correct).
- The common name of benzene 1,4-diol is phenol (Incorrect).
- The common name of benzene 1,4-diol is hydroquinone (Correct).

### Final Answer
The correct statements are:
1. The common name of benzene 1,2-diol is catechol.
2. The common name of benzene 1,4-diol is resorcinol.
3. The common name of benzene 1,4-diol is hydroquinone.