NEET Chemistry / AI question bank / NCERT Class 12 / Organic Compounds Containing Oxygen
Aldehydes, Ketones and Carboxylic Acids: NEET questions with solutions
NEET tests nucleophilic addition reactivity, aldol versus Cannizzaro, Tollens' and Fehling's tests, Clemmensen and Wolff-Kishner reductions, the iodoform test and the acidity order of substituted carboxylic acids. Marks are lost on needing an α-hydrogen for aldol, on which compounds give the iodoform test, and on how distance changes the inductive effect.
Also called: carbonyl compounds · aldol condensation · carboxylic acids
Questions
10 questions / answers after you pick
- Q1Which compound is the most reactive towards nucleophilic addition to the carbonyl group?
Nucleophilic additionEasySingle correct
- Q2Which compound gives a silver mirror with Tollens' reagent?
Oxidation and testsEasySingle correct
- Q3Acetophenone (C₆H₅COCH₃) is heated with zinc amalgam and concentrated HCl. What forms?
Reduction of carbonyl compoundsEasySingle correct
- Q4Which aldehyde does NOT undergo aldol condensation with dilute NaOH, but undergoes Cannizzaro reaction with concentrated NaOH?
Reactions due to α-hydrogenMediumSingle correct
- Q5Which compound gives a yellow precipitate when warmed with iodine and sodium hydroxide?
Oxidation and testsMediumSingle correct
- Q6Which acid is the strongest?
Acidity of carboxylic acidsMediumSingle correct
- Q7Carboxylic acids with α-hydrogens can be halogenated using red phosphorus. Judge the Assertion (A) and the Reason (R) below.
Reactions of carboxylic acidsMediumAssertion–Reason
- Q8Aldehydes and ketones react with many nucleophiles. Which of the statements below are correct?
Nucleophilic additionMediumStatement based
- Q9Each conversion in List I needs a specific reagent or set of conditions to make an aldehyde or ketone. Match each conversion with the…
Preparation of aldehydes and ketonesHardMatch the following
- Q10A mixture of methanal and benzaldehyde is heated with concentrated NaOH. What are the main products?
Cannizzaro reactionHardSingle correct
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