NEET2026ChemistryChapterActual
Match List I with List II. List I (Product formed) List II (Reagent reacting with carbonyl compound) A Semicarbazone 1 NH₂NH₂ B Hydrazone 2 One equivalent of R-OH and dry HCl C 2,4-DNP derivative 3 2,4-Dinitrophenylhydrazine D Hemiacetal 4 NH₂NHCONH₂ Choose the correct answer from the options given below:
Options
- AA-1, B-4, C-3, D-2
- BA-4, B-1, C-3, D-2
- CA-4, B-3, C-1, D-2
- DA-1, B-2, C-3, D-4
Correct answer
B. A-4, B-1, C-3, D-2
Step-by-step solution
Semicarbazone is formed when a carbonyl compound reacts with semicarbazide ( NH₂NHCONH₂ ). Thus, A matches with 4. Hydrazone is formed when a carbonyl compound reacts with hydrazine ( NH₂NH₂ ). Thus, B matches with 1. 2,4-DNP derivative is formed when a carbonyl compound reacts with 2,4-Dinitrophenylhydrazine. Thus, C matches with 3. Hemiacetal is formed when an aldehyde reacts with one equivalent of an alcohol ( R-OH ) in the presence of dry HCl . Thus, D matches with 2. The correct matching is A-4, B-1, C-3, D-2.