11 public questions tagged with this topic.
N-Ethylaniline, a secondary aromatic amine, undergoes bromination at the 2, 4, 6-positions due to the activating -NHCH₂CH₃ group, forming 2, 4, 6-Br₃C₆H₂NHCH₂CH₃ .
Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.
N-Ethylethanamine with excess CH₃I forms a quaternary salt ( CH₃CH₂N(CH₃)2CH₂CH₃+I- ), which with NaOH yields CH₃CH₂N(CH₃)CH₂CH₃ via elimination. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
Ethanamine with excess CH₃CH₂I forms a quaternary salt ( (CH₃CH₂)4N+I- ), which with AgOH yields (CH₃CH₂)3N via elimination of CH₃CH₂I . This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Chemical Bonding and Molecular Structure, Topic: Covalent bonds in CH₃CH₂NH₂, counting bonds, Lewis structure.
Secondary amines like (CH₃CH₂)₂NH form CH₃CON(CH₂CH₃)₂ with CH₃COCl, which has no N-H bonds, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution
Aniline forms anilinium hydrogensulphate, which rearranges on heating to p-aminobenzene sulphonic acid (sulphanilic acid).
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution
Aniline (C₆H₅NH₂) with excess Br₂ in water forms 2,4,6-tribromoaniline due to the strong activation by −NH₂, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Phenol reacts with conc. HNO₃ at 60°C to form 2,4,6-trinitrophenol (picric acid) due to the strong activation of the ring by the -OH group, allowing trisubstitution.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
2-Methylbutan-2-ol (CH₃C(OH)(CH₃)CH₂CH₃), a tertiary alcohol, reacts with Lucas reagent (ZnCl₂ in conc. HCl) to form 2-chloro-2-methylbutane (CH₃C(Cl)(CH₃)CH₂CH₃) via an SN₁ mechanism.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
1-Phenylethanol (C₆H₅CH(OH)CH₃), a secondary alcohol, is oxidized to acetophenone (C₆H₅COCH₃) with KMnO₄, stopping at the ketone stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Classification and Nomenclature and Structures of Alcohols Phenols Ethers
Phenol reacts with conc. HNO₃ to form 2,4,6-trinitrophenol (picric acid) due to the strong activation of the ring by the -OH group, allowing trisubstitution.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Classification and Nomenclature and Structures of Alcohols Phenols Ethers
This is a Wurtz reaction, coupling two CH₃CH₂CH₂CH₂Cl molecules to form CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃ (octane).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Elimination Reactions and Reaction with Metals and Other Reactions
