The red coloured compound formed during
Victor-Meyer's test for ethanol is

Options

A. `CH_(3)-underset(NOH)underset(||)(C)-NO_(2)^(-)Na^(+)`
B. `CH_(3)-underset(N-O^(-)Na^(+))underset(||)(C)-NO_(2)`
C. `CH_(3)CH=NOH`
D. `CH_(3)CH_(2)-NHOH`

Explanation

To answer the question regarding the red-colored compound formed during Victor-Meyer's test for ethanol, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Victor-Meyer's Test**:
- Victor-Meyer's test is a qualitative test used to identify primary alcohols, such as ethanol. The test involves the reaction of the alcohol with iodine and phosphorus.

2. **Reagents Involved**:
- The main reagents used in this test are iodine (I2) and phosphorus (P). These react with the ethanol (C2H5OH) present in the sample.

3. **Formation of Iodoethane**:
- When ethanol reacts with iodine and phosphorus, it forms iodoethane (C2H5I) as an intermediate compound. This step is crucial as it sets the stage for the subsequent reactions.

4. **Reaction with Sodium Nitrite**:
- The iodoethane then reacts with sodium nitrite (NaNO2). Sodium nitrite acts as a nucleophile in this reaction.

5. **Formation of Red-Colored Compound**:
- The final product of this reaction is a red-colored compound known as "red nitroso compound." In the case of ethanol, this compound is specifically known as "red nitrosoethane."

6. **Conclusion**:
- Therefore, the red-colored compound formed during Victor-Meyer's test for ethanol is **red nitrosoethane**.

### Final Answer:
The red-colored compound formed during Victor-Meyer's test for ethanol is **red nitrosoethane**.

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