Aldehydes and Ketones MCQs for MDCAT Practice

Chemistry section, Aldehydes and Ketones chapter. Sample questions from past PMC papers.

1. Question 1
   Fehling's solution works on the principle of redox reaction which results in:
   • A.Reduction of aldehydes
   • B.Oxidation of Copper(II)
   • C.Oxidation of aldehyde
   • D.Oxidation of Ketone
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
2. Question 2
   Which one of the following compounds will give a precipitate of tri-iodomethane (iodoform) when reacted with iodine and aqueous sodium hydroxide?
   • A.C2H5CHO
   • B.(CH3)2COH
   • C.CH3CO2H
   • D.CH3CH2CH(OH)CH3
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
3. Question 3
   Which of the following will not give iodoform test?
   • A.Formaldehyde
   • B.Aceteldehyde
   • C.Acetone
   • D.Ethanol
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
4. Question 4
   According to Popoff's Rule for the oxidative cleavage of unsymmetrical ketones, such as 2-hexanone, the carbonyl group remains attached to which alkyl group during the rupture of the C-C bond?
   • A.The larger alkyl group
   • B.The smaller alkyl group
   • C.It distributes equally between both
   • D.The carbonyl carbon itself is oxidized to CO2
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
5. Question 5
   To distinguish aldehyde from ketone which solution is used:
   • A.Alkaline solution
   • B.Fehling's solution
   • C.A solution containing K2Cr2O7
   • D.A solution containing acid only
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
6. Question 6
   The haloform test is given by all of the following, except;
   • A.Formaldehyde
   • B.Acetaldeyde
   • C.Acetone
   • D.Alpha-phenylethyl alcohol
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
7. Question 7
   Ketone can be oxidized by using:
   • A.Tollen's reagent
   • B.Fehling solution
   • C.K2Cr2O7 with H2SO4
   • D.K2Cr2O7 with HNO3
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.
8. Question 8
   Which of the following carbonyl compounds does not shows rapid reaction with sodium nitroprusside
   • A.Formaldehyde
   • B.Acetaldehyde
   • C.Benzaldehyde
   • D.Acetone
   Sign up free to see the explanation, distractor analysis, and add this to your spaced repetition deck.