What is the IUPAC name of CH₃CH₂COCH₂CH₃?
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