plumiAldehydes and ketones: CAIE A‑Level Chemistry questions
Every CAIE A-Level Chemistry exam question on 17.1 Aldehydes and ketones, June 2024 and the specimen papers, with its mark scheme and examiner’s report.
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Q6(b)(i)
The whole paper ↗![June 2024 Paper 2, question 6(b)(i): Identify the role of reagent T for each functional group that reacts in reaction 1. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970121-jun24-06-bi-qp.webp)
Q6(b)(ii)
The whole paper ↗![June 2024 Paper 2, question 6(b)(ii): Suggest the identity of reagent U in reaction 2. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970121-jun24-06-bii-qp.webp)
Q6(c)(ii)
The whole paper ↗
Q3(d)(iv)
The whole paper ↗![Specimen Paper 2, question 3(d)(iv): The reagent for reaction 4 is NaBH4. Identify the role of NaBH4 in this reaction. [1]](https://pub-e8a9dbab8e2a4d089f52b2a45e0d0b50.r2.dev/bank/970102-spec-03-div-qp.webp)
All 10 questions on Aldehydes and ketones, as a list
- June 2024, Paper 1, Q34 (1 mark): X is a non-cyclic ketone with a single carbonyl group and no other functional groups. Ketone X has the following properties. ● When ketone X is treated with NaB
- June 2024, Paper 1, Q35 (1 mark): Compound Y: ● changes the colour of acidified K2Cr2O7 from orange to green ● has no effect on Fehling’s reagent ● produces an orange precipitate with 2,4-dinitr
- June 2024, Paper 1, Q36 (1 mark): The product of the reaction between propanone and hydrogen cyanide is hydrolysed under acidic conditions. What is the formula of the final product? A CH3CH(OH)C
- June 2024, Paper 2, Q6(b)(i) (1 mark): Identify the role of reagent T for each functional group that reacts in reaction 1. [1]
- June 2024, Paper 2, Q6(b)(ii) (1 mark): Suggest the identity of reagent U in reaction 2. [1]
- June 2024, Paper 2, Q6(c)(ii) (1 mark): Q contains only hydroxyl functional groups. Complete Table 6.1 to show the observations that occur when 2,4-dinitrophenylhydrazine (2,4-DNPH reagent) is added t
- Specimen, Paper 1, Q30 (1 mark): Diols in which both hydroxy groups are bonded to the same carbon atom spontaneously eliminate a molecule of water to produce a carbonyl compound. Which compound
- Specimen, Paper 1, Q34 (1 mark): Compound R gives a positive test with alkaline aqueous iodine. Compound R does not display stereoisomerism. What could be compound R? A CH3COCH2CH2OH B CH3CH2CH
- Specimen, Paper 1, Q38 (1 mark): For which mixture is the observation described correctly? reagents observation A pentanal + Fehling’s reagent blue solution changes to orange / red precipitate
- Specimen, Paper 2, Q3(d)(iv) (1 mark): The reagent for reaction 4 is NaBH4. Identify the role of NaBH4 in this reaction. [1]
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