Benzendiazonium chloride + 'x' `overset(OH^(-))(to)` Yellow dry 'x' in above
reaction is

Options

A. Phenol
B. Aniline
C. Benzene
D. None of these

Answer

To solve the question regarding the reaction of benzene diazonium chloride with 'x' in the presence of OH⁻ to yield a yellow dry product, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactant is benzene diazonium chloride (C₆H₅N₂Cl) and we need to determine what 'x' is.

2. **Consider Possible Compounds for 'x'**: The common candidates for 'x' in this type of reaction are phenol (C₆H₅OH) and aniline (C₆H₅NH₂), as both can react with diazonium salts.

3. **Reaction with Phenol**: When benzene diazonium chloride reacts with phenol in the presence of OH⁻, it typically forms an orange dye (azo dye). The reaction can be represented as:
\[ C₆H₅N₂Cl + C₆H₅OH \xrightarrow{OH^-} \text{Orange dye} + HCl \]
This indicates that phenol does not yield a yellow product.

4. **Reaction with Aniline**: When benzene diazonium chloride reacts with aniline (C₆H₅NH₂) in the presence of OH⁻, it forms a yellow dye. The reaction can be represented as:
\[ C₆H₅N₂Cl + C₆H₅NH₂ \xrightarrow{OH^-} \text{Yellow dye} + HCl \]
This indicates that aniline does yield a yellow product.

5. **Conclusion**: Since the question specifies that the product is a yellow dry substance, we conclude that 'x' must be aniline.

### Final Answer:
The yellow dry 'x' in the reaction with benzene diazonium chloride is **aniline (C₆H₅NH₂)**.

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