In the given reaction:
`C_(6) H_(5) - overset(O)overset(||)(C )-H overset(NH_(2) OH//H^(e ))(rarr)` [x], [x] will be ,

Options

A. Only syn oxime
B. Only anti oxime
C. Mixture of syn and anti oxime
D. Secondary amide

Answer

To solve the problem, we need to analyze the reaction given in the question step by step.

### Step-by-Step Solution:

1. **Identify the Reactants:**
The reactant in the reaction is Benzaldehyde, which has the formula C₆H₅CHO. The other reactant is Hydroxylamine (NH₂OH).

2. **Understand the Reaction Type:**
Benzaldehyde is a carbonyl compound (an aldehyde), and it reacts with Hydroxylamine, which is a derivative of ammonia. This type of reaction typically leads to the formation of an oxime.

3. **Reaction Mechanism:**
In the reaction, the carbonyl group (C=O) of benzaldehyde reacts with the hydroxylamine. The nitrogen from hydroxylamine attacks the carbon atom of the carbonyl group, leading to the formation of a tetrahedral intermediate.

4. **Elimination of Water:**
The tetrahedral intermediate will then undergo dehydration (loss of water). The oxygen atom from the carbonyl group (C=O) will be eliminated along with a hydrogen atom from the hydroxylamine, resulting in the formation of water (H₂O).

5. **Formation of the Product:**
After the elimination of water, the product formed will be an oxime. The structure of the product can be represented as:
\[ C₆H₅C=N-OH \]
This compound has a double bond between carbon and nitrogen, with a hydroxyl group (–OH) attached to the nitrogen.

6. **Geometric Isomerism:**
The product can exhibit geometric isomerism (cis/trans or E/Z isomerism) due to the presence of the double bond between carbon and nitrogen. The possible isomers are:
- **Syn-oxime**: where the hydroxyl group and the phenyl group are on the same side.
- **Anti-oxime**: where the hydroxyl group and the phenyl group are on opposite sides.

7. **Conclusion:**
The final product of the reaction is an oxime, specifically a mixture of syn-oxime and anti-oxime. Therefore, the correct answer to the question is the oxime derived from benzaldehyde.

### Final Answer:
The product [x] will be an oxime, specifically a mixture of syn-oxime and anti-oxime.