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A tertiary amine has three alkyl groups on nitrogen. (CH₃CH₂)₃N (triethylamine) fits this description, as per the PDF’s classification.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution
Methylamine (CH₃NH₂) has one carbon, the smallest chain among the options, as per the PDF’s classification.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution
Secondary amines like (CH₃)₂NH form sulphonamides with no acidic hydrogen, making them insoluble in alkali, unlike primary amine products.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Aniline (C₆H₅NH₂) has the −NH₂ group directly attached to a benzene ring, classifying it as an aromatic amine, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Secondary amines like (CH₃CH₂)₂NH form sulphonamides lacking an acidic hydrogen, insoluble in alkali, as per the PDF’s Hinsberg test.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Ethylamine (CH₃CH₂NH₂) has one alkyl group attached to nitrogen and no aryl group, making it a primary aliphatic amine, as per the PDF’s classification.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
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