Tautomerism in Carbonyl Compounds
Learn about keto-enol tautomerism, its structural requirements, and stability factors.
Why this shows up in the exam
You may be asked to identify tautomers and predict which form predominates.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
The order of stability of the following tautomeric compounds is OH | CH₂=C-CH₂-C-CH₃ (I) O || CH₃-C-CH₂-C-CH₃ (II) OH O | || CH₃-C=CH-C-CH₃ (III)
Push further
More challenging5 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
Identify the compound that can exhibit keto-enol tautomerism.
More from Aldehydes, Ketones and Carboxylic Acids
Nucleophilic Addition to Carbonyl Compounds
Learn the mechanisms and outcomes of nucleophilic addition reactions to aldehydes and ketones, including cyanohydrin, hydrazone, and Schiff base formation.
Reactions of Carboxylic Acids and Their Derivatives
Study nucleophilic acyl substitution, esterification, hydrolysis, decarboxylation, and formation of anhydrides, imides, and acyl chlorides.
Preparation of Aldehydes
Learn the main laboratory and industrial methods for synthesizing aldehydes, including oxidation, reduction, and named reactions.
Aldol Condensation and Related Reactions
Learn the mechanism, requirements, and products of aldol condensation, including cross-aldol and dehydration to α,β-unsaturated carbonyls.
Reduction and Oxidation Reactions
Study the reduction of carbonyl and carboxylic compounds to alcohols or hydrocarbons, and their oxidation to acids or other products.
Chemical Tests for Functional Groups
Learn the qualitative tests for aldehydes, ketones, and carboxylic acids, such as Tollens', Fehling's, and others.