Q49.Identify ' A ' in the following reaction: (1) (2) (3) (4)
What This Question Tests
This question tests the knowledge of diazotization of aniline followed by a coupling reaction. Aniline reacts with NaNO2/HCl to form benzene diazonium chloride, which then couples with an activated aromatic compound (like phenol or N,N-dimethylaniline) to form an azo dye. The structure of 'A' is 4-(N,N-dimethylamino)azobenzene, an azo dye formed by coupling with N,N-dimethylaniline.
Concepts Tested
📚 NCERT Sections This Tests
9.7 — Write Short Notes On The Following:
Chemistry Class 12 · Chapter 9
9.7 Write short notes on the following: (i) Carbylamine reaction (ii) Diazotisation (iii) Hofmann’s bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
9.9 — Give The Structures Of A, B And C In The Following Reactions:
Chemistry Class 12 · Chapter 9
9.9 Give the structures of A, B and C in the following reactions: B NaOH Br 2 C (i) CH 3 CH 2 I NaCN A Partial OHhydrolysis CuCN H 2 O/H NH 3 (ii) C 6 H 5 N 2 Cl A B C 4 B HNO 2 C (iii) CH 3 CH 2 Br KCN A LiAlH 0 C 2 2 O/H HCl B H C (iv) C6 H 5 NO 2 Fe/HCl A NaNO273 K 3 A NaOBr B NaNO 2 /HCl C (v) CH 3 COOH NH 2 B C 6 H 5 OH C (vi) C6 H 5 NO 2 Fe/HCl A HNO273K 279 Amines Reprint 2025-26
📋 Question Details
- Chapter
- Nitrogen Compounds
- Topic
- Reactions of Amines
- Year
- 2024
- Shift
- 05 Apr Shift 1
- Q Number
- Q49
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 13: Amines
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