Question

Match the compounds in List-I with the appropriate observations in List-II and choose the correct option.

• A. P → 1; Q → 5; R → 4; S → 2
• B. P → 2; Q → 5; R → 1; S → 3
• C. P → 5; Q → 2; R → 1; S → 4
• D. P → 2; Q → 1; R → 5; S → 3

Hint:

Common tests like ninhydrin (for amino acids), diazonium reactions (for phenols/amines), and FeCl\(_3\) (for phenolic OH) help in qualitative identification.

Answer 1

The Correct Option is B

(P): The compound contains an $\alpha$-amino acid backbone → reacts with ninhydrin to give a purple color and phenol group gives violet color with FeCl\(_3\).
\[ \Rightarrow \boxed{P \rightarrow 2} \] (Q): It is an aryl hydrazone derivative. Upon hydrolysis, it gives an amine and a carbonyl. These give positive ninhydrin test but no phthalein dye.
\[ \Rightarrow \boxed{Q \rightarrow 5} \] (R): Aniline salt \( \text{Ph-NH}_3^+ \text{Cl}^- \) reacts with diazonium salts to form azo dyes (yellow).
\[ \Rightarrow \boxed{R \rightarrow 1} \] (S): Phenylhydrazine (NHNH\(_2\)) reacts with glucose to give hydrazones.
\[ \Rightarrow \boxed{S \rightarrow 3} \] 

• P → 2
• Q → 5
• R → 1
• S → 3

Final Answer: \( \boxed{\text{B}} \)