Question

_____ reagent is used for development of TLC to identify Vitamin A.

• A. Jaffe's
• B. Carr-Price
• C. Dragendorff's
• D. Iodine

Hint:

Carr-Price = Blue color = Vitamin A.

Answer 1

The Correct Option is B

Step 1: Concept
Thin Layer Chromatography (TLC) uses specific spray reagents to visualize and identify separated compounds.

Step 2: Meaning
The identification of Vitamin A (Retinol) relies on its reaction with antimony trichloride.

Step 3: Analysis
The Carr-Price reagent (a solution of antimony trichloride in chloroform) reacts with Vitamin A to produce a characteristic blue color, which eventually turns pink. Jaffe's is for creatinine, and Dragendorff's is for alkaloids.

Step 4: Conclusion
Thus, Carr-Price reagent is the standard for identifying Vitamin A in analytical procedures.

Final Answer: (B)