The electrolytic reduction of nitrobenzene in strongly acidic medium produces .

Options

A. Phenol
B. p-Aminophenol
C. Hydroazobenzen
D. Azohebzene

Explanation

To solve the question regarding the electrolytic reduction of nitrobenzene in a strongly acidic medium, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactant**: The starting compound is nitrobenzene (C6H5NO2). It contains a nitro group (-NO2) attached to a benzene ring.

2. **Understand the Reaction Conditions**: The reaction occurs in a strongly acidic medium, which can influence the reduction process.

3. **Electrolytic Reduction**: In an electrolytic reduction, nitrobenzene will undergo a reduction process where it loses oxygen. The nitro group (-NO2) is reduced to a nitroso group (-NO) first.

4. **Formation of Nitrosobenzene**: The first product of this reduction is nitrosobenzene (C6H5NO), which is formed by the loss of one oxygen atom from nitrobenzene.

5. **Further Reduction**: The nitrosobenzene can undergo further reduction, where it is converted to phenylhydroxylamine (C6H5NHOH). This involves the addition of hydrogen to the nitroso group.

6. **Rearrangement**: The phenylhydroxylamine can then rearrange to form para-aminophenol (C6H4(OH)(NH2)), where the hydroxyl group (-OH) and the amino group (-NH2) are positioned para to each other on the benzene ring.

7. **Final Product**: The final product of the electrolytic reduction of nitrobenzene in a strongly acidic medium is therefore para-aminophenol.

### Conclusion:
The answer to the question is **option B: para-aminophenol**.