11 public questions tagged with this topic.
As steric hindrance increases, reactivity decreases. Benzophenone has bulky phenyl groups, making it the least reactive. 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.
2,3-Dimethylbut-2-ene ((CH₃)₂C\=C(CH₃)₂) cleaves symmetrically to form two molecules of acetone (CH₃COCH₃), a ketone.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Reactions due to α-Hydrogen - Aldol, Cannizzaro and Acidity of Carboxylic Acids
Pentanoic acid (CH₃CH₂CH₂CH₂COOH) forms calcium pentanoate, which decarboxylates to heptan-4-one (CH₃CH₂CH₂COCH₂CH₂CH₃), an eight-carbon ketone.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Reactions due to α-Hydrogen - Aldol, Cannizzaro and Acidity of Carboxylic Acids
The longest chain with the ketone group has 5 carbons (pentan-2-one), with the carbonyl on C-2: pentan-2-one.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Chemical Reactions - Reduction, Oxidation and Tests - Tollens, Fehling, Iodoform
The longest chain with the ketone group has 4 carbons (butan-2-one), with a methyl group on C-3: 3-methylbutan-2-one.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Chemical Reactions - Reduction, Oxidation and Tests - Tollens, Fehling, Iodoform
The longest chain with the ketone group has 6 carbons (hexan-3-one). Substituents: ethyl on C-4, chloro on C-6. Name: 4-ethyl-6-chlorohexan-3-one.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Chemical Reactions - Reduction, Oxidation and Tests - Tollens, Fehling, Iodoform
The longest chain with the ketone group has 5 carbons (pentan-3-one), with the carbonyl on C-3: pentan-3-one.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Chemical Reactions - Reduction, Oxidation and Tests - Tollens, Fehling, Iodoform
Hexan-3-one (CH₃CH₂COCH₂CH₂CH₃) undergoes self-aldol condensation to form 4-hydroxy-3-propylheptan-5-one (CH₃CH₂C(OH)(CH(CH₂CH₃)COCH₂CH₃)CH₂CH₃), a nine-carbon β-hydroxy ketone.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Fructose is a ketohexose, a six-carbon sugar with a ketone group at C2.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Carbohydrates - Monosaccharides - Structure and Properties
PCC oxidizes secondary alcohols to ketones without further oxidation, unlike strong oxidants like KMnO₄.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
CH₃COCH₃ (acetone) contains a carbonyl group (C=O) attached to two alkyl groups, characteristic of ketones.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Classification and Nomenclature of Organic Compounds - IUPAC
