Aldehydes, Ketones and Carboxylic Acids is a Class 12 Chemistry chapter that carries about 5.2% of the Chemistry questions in NEET. Practise it with 51 questions covering 2 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Aldehydes, Ketones and Carboxylic Acids had 23 questions, about 1.8 a year. The most in one paper was 4, in NEET 2021.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 1 |
| NEET 2024 | 3 |
| NEET 2023 | 1 |
| NEET 2022 | 4 |
| NEET 2021 | 4 |
| NEET 2020 | 3 |
| NEET 2019 | 1 |
| NEET 2018 | 1 |
| NEET 2017 | 2 |
| NEET 2016 | 0 |
| Re-AIPMT 2015 | 1 |
| AIPMT 2014 | 1 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
A carboxylic acid is distinguished from a phenol by its reaction with:
Answer: C. sodium bicarbonate, which liberates CO₂
Why: Phenols are too weakly acidic to react with bicarbonate.
A carboxylic acid reacts with an alcohol in the presence of a few drops of concentrated sulphuric acid to form:
Answer: C. an ester and water
Why: This esterification (Fischer esterification) is reversible, and the acid catalyst speeds up reaching equilibrium.
Formalin is:
Answer: B. a 40% aqueous solution of formaldehyde, used as a preservative
Why: It is used to preserve biological specimens.
Propanone reacts with methylmagnesium bromide, followed by hydrolysis, to give:
Answer: B. 2-methylpropan-2-ol
Why: A ketone gives a tertiary alcohol.
The α-halogenation of carboxylic acids with Cl₂ and a trace of red phosphorus is the:
Answer: D. Hell–Volhard–Zelinsky reaction
Why: It gives α-chloro acids, which can be converted into amino acids.
Which acid derivative is formed on reacting a carboxylic acid with SOCl₂?
Answer: B. acid chloride
Why: The by-products SO₂ and HCl are gases.
Stearic acid is:
Answer: B. C₁₇H₃₅COOH, a saturated fatty acid
Why: Oleic acid, C₁₇H₃₃COOH, has one C=C bond, and palmitic acid is C₁₅H₃₁COOH.
Which of the following gives a yellow precipitate of iodoform with I₂ and NaOH?
Answer: D. propanone
Why: It has a CH₃CO– group (a methyl ketone); ethanol also gives this test.
Aldehydes, Ketones and Carboxylic Acids carries about 5.2% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 23 times, about 1.8 questions a year.
Aldehydes, Ketones and Carboxylic Acids is a Class 12 Chemistry chapter in the NCERT syllabus.
NeetVictory has 51 practice questions on Aldehydes, Ketones and Carboxylic Acids, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
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