`PhNO_(2) underset(NH_(4)Cl)overset(Zn)to A underset("Tollen's Reagent")overset(AgNO_(3), NH_(4)OH)toB` (organic compound). Which is/are incorrect?

Options

A. A gives Tollen's test
B. A shows tautomerism
C. A is aniline
D. A foms complex with Tollen's reagent but not gives silver mirror

Explanation

To solve the question step by step, we will analyze the reactions given and identify the compounds involved.

### Step 1: Identify the initial compound
The starting compound is **Nitrobenzene (PhNO₂)**.

### Step 2: Reaction with Zinc and Ammonium Chloride
Nitrobenzene reacts with **Zinc (Zn)** in the presence of **Ammonium Chloride (NH₄Cl)**. This reaction is a reduction process where the nitro group (-NO₂) is reduced to an amine derivative. The product formed is **N-phenylhydroxylamine (A)**.

**Reaction:**
\[ \text{PhNO}_2 + \text{Zn} + \text{NH}_4\text{Cl} \rightarrow \text{N-phenylhydroxylamine (A)} \]

### Step 3: Reaction with Tollen's Reagent
Next, N-phenylhydroxylamine (A) reacts with **Tollen's Reagent** (which is a solution of silver nitrate in ammonia, AgNO₃/NH₄OH). This reagent is used to test for aldehydes and some other compounds. In this case, N-phenylhydroxylamine does not behave as an aldehyde but can undergo oxidation.

**Reaction:**
\[ \text{N-phenylhydroxylamine (A)} + \text{Tollen's Reagent} \rightarrow \text{Nitrobenzene (B)} + \text{Ag} + \text{NH}_3 \]

### Step 4: Identify the final product
The final product (B) formed after the reaction with Tollen's Reagent is again **Nitrobenzene (B)**.

### Step 5: Analyze the statements
Now, we need to evaluate the statements regarding A and B:
1. **A does not have any alpha H**: This is correct because N-phenylhydroxylamine does not have an alpha hydrogen.
2. **A shows tautomerism**: This is incorrect because tautomerism requires the presence of alpha hydrogen, which A lacks.
3. **A is aniline**: This is incorrect because A is N-phenylhydroxylamine, not aniline.
4. **A forms a complex but does not give a silver mirror test**: This is also incorrect because A does react with Tollen's Reagent and gives a silver mirror test.

### Conclusion
The incorrect statements are:
- A shows tautomerism.
- A is aniline.
- A forms a complex but does not give a silver mirror test.