Questions
26
across 8 papers
Share of subject
6.5%
of 398 Chemistry Qs
Weightage rank
#1
of 31 chapters
Difficulty
2 easy · 13 medium · 11 hard
Aldehydes, Ketones and Carboxylic Acids contributed 26 of the 398 NEET Chemistry questions between 2020 and 2026 (Re-NEET 2026 included). That is 6.5% of the subject and makes it the #1 chapter out of 31 by weightage — roughly 3.3 questions per paper, peaking at 5 in NEET 2022.
Of the 26 questions tagged for difficulty, 8% were easy, 50% medium and 42% hard — a chapter that tends to bring the tougher questions.
It has been asked less often lately: 2.3 questions per paper across NEET 2025, NEET 2026 and Re-NEET 2026, against 4 in 2020–2022.
The single most-tested topic is Aldehydes (Methods of Preparation) — 3 questions across 3 papers.
18 topics tagged under Aldehydes, Ketones and Carboxylic Acids. Numbers show how many questions each topic had in each paper; E / M / H are the easy, medium and hard counts.
| Topic | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | Re | Total | E | M | H |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aldehydes (Methods of Preparation) | 1 | 1 | – | – | – | – | – | 1 | 3 | – | 1 | 2 |
| Chemical Reactions of Aldehydes and Ketones (Addition of Grignard Reagent) | 1 | 1 | – | – | – | 1 | – | – | 3 | – | 1 | 2 |
| Miscellaneous/Mixed Reactions | – | 1 | 1 | 1 | – | – | – | – | 3 | – | 2 | 1 |
| Chemical Reactions of Aldehydes and Ketones (Oxidation and Reduction of Aldehydes) | – | 1 | – | 1 | – | – | – | – | 2 | – | 1 | 1 |
| Methods of Preparation for Aldehydes and Ketones (From Hydrocarbons) | – | – | – | – | 2 | – | – | – | 2 | – | – | 2 |
| Carboxyl Group (Chemical Properties) | – | – | – | – | – | 1 | – | – | 1 | 1 | – | – |
| Carboxyl Group (Methods of Preparation) | – | – | 1 | – | – | – | – | – | 1 | – | – | 1 |
| Chemical Reactions of Aldehydes and Ketones (Addition of Hydrogen Cyanide) | – | – | – | 1 | – | – | – | – | 1 | – | – | 1 |
| Chemical Reactions of Aldehydes and Ketones (Nucleophilic Addition Reactions) | – | – | 1 | – | – | – | – | – | 1 | – | – | 1 |
| Chemical Reactions of Aldehydes and Ketones (Other Reactions) | 1 | – | – | – | – | – | – | – | 1 | – | 1 | – |
| Chemical Reactions of Aldehydes and Ketones (Oxidation by Fehling's solution) | – | – | – | – | 1 | – | – | – | 1 | 1 | – | – |
| Chemical Reactions of Aldehydes and Ketones (Oxidation by Tollen's Reagent) | – | – | – | 1 | – | – | – | – | 1 | – | 1 | – |
| Chemical Reactions of Aldehydes and Ketones (Oxidation of Methyl Ketones by Haloform Reaction) | – | – | – | – | – | – | – | 1 | 1 | – | 1 | – |
| Chemical Reactions of Aldehydes and Ketones (Oxidation) | – | – | – | – | – | – | 1 | – | 1 | – | 1 | – |
| Chemical Reactions of Aldehydes and Ketones (Reaction Due to Presence of Alpha Hydrogen-Aldol/ C…) | – | – | – | – | – | – | – | 1 | 1 | – | 1 | – |
| Chemical Reactions of Aldehydes and Ketones (Reduction Reactions) | – | – | 1 | – | – | – | – | – | 1 | – | 1 | – |
| Physical Properties of Aldehydes and Ketones | – | – | 1 | – | – | – | – | – | 1 | – | 1 | – |
| eMethods of Preparation for Aldehydes and Ketones (From Carboxylic Acids) | – | – | – | – | – | 1 | – | – | 1 | – | 1 | – |
In the NEET papers from 2020 to 2026 (including Re-NEET 2026), 26 Chemistry questions came from Aldehydes, Ketones and Carboxylic Acids — 6.5% of the subject, or about 3.3 per paper.
By past weightage it ranks #1 of 31 Chemistry chapters, so it is one of the five highest-weightage Chemistry chapters, with 26 questions over 2020–2026.
The most-tested topics are Aldehydes (Methods of Preparation) (3), Chemical Reactions of Aldehydes and Ketones (Addition of Grignard Reagent) (3) and Miscellaneous/Mixed Reactions (3). The topic table above lists every topic with its count in each paper.
Of the 26 difficulty-tagged questions, 8% were easy, 50% medium and 42% hard.
Aldehydes (Methods of Preparation), Chemical Reactions of Aldehydes and Ketones (Oxidation of Methyl Ketones by…, Chemical Reactions of Aldehydes and Ketones (Oxidation) and Chemical Reactions of Aldehydes and Ketones (Reaction Due to Presence of Alpha… were asked in the 2026 papers.
Edurack has chapter-wise NEET previous-year questions for Aldehydes, Ketones and Carboxylic Acids. Use the practice button on this page to open the set, attempt questions and check your answers.
Counts come from Edurack's tagged set of NEET papers 2020–2026 (including Re-NEET 2026), mapped to NCERT chapters and topics. Use them as a trend guide — past frequency doesn't guarantee what a future paper will ask.