Question

Match List I with List II

Choose the correct answer from the options given below:

• A. A-II, B-IV, C-V, D-III, E-I
• B. A-III, B-II, C-I, D-IV, E-V
• C. A-I, B-II, C-V, D-III, E-IV
• D. A-II, B-V, C-IV, D-III, E-I

Hint:

Adulteration Detection Reagents:
Cane Sugar = Resorcinol
Hydrogen Peroxide = p-phenylenediamine
Formaldehyde = Ferric chloride (Hehner)
Maltodextrin/Starch = Iodine solution
Urea = DMAB.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Qualitative and colorimetric detection tests for common adulterants in milk.

Step 2: Detailed Explanation:
Matching milk adulterants in List I with diagnostic detection chemical reagents in List II:
- A. Sugar (Cane Sugar): Detected by Seliwanoff's test using II. Resorcinol in conc. HCl (develops red color).
- B. Hydrogen Peroxide: Detected by adding IV. p-phenyl diamine hydrochloride (turns deep blue/violet).
- C. Formaldehyde (Formalin): Detected by Hehner test with conc. $ ext{H}_2 ext{SO}_4$ containing V. Ferric chloride (purple/violet ring).
- D. Maltodextrin Starch: Detected by adding III. Iodine solution (develops blue/brown-red complex).
- E. Urea: Detected by DMAB reagent, I. p-dimethyl amino benzaldehyde (develops distinct yellow color).
Matching sequence: A-II, B-IV, C-V, D-III, E-I.

Step 3: Final Answer:
Hence, the correct matching is A-II, B-IV, C-V, D-III, E-I, corresponding to option (A).