Question

In the Victor-Meyer test, the color given by 1°, 2°, and 3° alcohols are respectively:

• A. Red, colorless, blue
• B. Red, blue, colorless
• C. Colorless, red, blue
• D. Red, blue, violet

Hint:

Victor-Meyer test is used to distinguish between different types of alcohols based on color changes.

Answer 1

The Correct Option is B

Step 1: Understanding the Victor-Meyer Test
This test differentiates primary, secondary, and tertiary alcohols based on their reactions with HI, AgNOsubscript{2}, and KOH.
Step 2: Color Development
Primary Alcohols: Convert to red nitroalkane.
Secondary Alcohols: Convert to blue pseudonitrole.
Tertiary Alcohols: Do not form a stable compound and remain colorless.
Final Answer: Red, blue, colorless.

Answer 2

In the Victor-Meyer test, the colors given by 1°, 2°, and 3° alcohols are Red, Blue, and Colorless respectively.

The Victor-Meyer test is a classical chemical test used to distinguish between primary (1°), secondary (2°), and tertiary (3°) alcohols based on the color of the precipitate formed.

1° Alcohols react to give a red-colored precipitate,
2° Alcohols give a blue-colored precipitate,
and 3° Alcohols do not form any colored precipitate, hence are colorless.

This difference in color arises due to the variation in reactivity and mechanism with which these alcohols interact in the Victor-Meyer reaction.

Thus, the test provides a simple visual method to identify the type of alcohol present.