Welcome to the Aldehydes & Ketones Reactions MDCAT MCQs with Answers. In this post, we have shared Aldehydes & Ketones Reactions Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Chemistry offers a chance to enhance your knowledge regarding Aldehydes & Ketones Reactions MCQs in this MDCAT Online Test.
The reaction of aldehydes with Tollens’ reagent produces:
a) Alcohol
b) Carboxylic acid
c) Silver mirror
d) Ketone
The reagent used in the reduction of aldehydes to primary alcohols is:
a) NaBH₄
b) KMnO₄
c) H₂SO₄
d) Br₂
Ketones react with iodine in the presence of a base to form:
a) Iodoform
b) Ester
c) Alcohol
d) Aldehyde
The reaction of aldehydes with Fehling’s solution yields:
a) No reaction
b) Red precipitate
c) Blue solution
d) Yellow precipitate
In the reaction of aldehydes with HCN, the product formed is:
a) Cyanohydrin
b) Carboxylic acid
c) Ester
d) Ketone
The reaction of ketones with Grignard reagents produces:
a) Aldehydes
b) Tertiary alcohols
c) Esters
d) Carboxylic acids
The test for aldehydes using Schiff’s reagent gives a:
a) Pink color
b) Blue color
c) Green color
d) Yellow color
The reaction of aldehydes with sodium bisulphite forms:
a) Aldehyde bisulphite
b) Sodium salt
c) Ketone
d) Alcohol
The oxidation of a ketone generally results in:
a) Carboxylic acid
b) Aldehyde
c) No reaction
d) Ester
Aldehydes can be oxidized to carboxylic acids using:
a) Tollens’ reagent
b) Fehling’s solution
c) KMnO₄
d) NaBH₄
The reaction of ketones with a primary amine yields:
a) Ketone
b) Imine
c) Amide
d) Alcohol
The reaction of aldehydes with acetic anhydride in the presence of an acid catalyst forms:
a) Ester
b) Aldehyde
c) Ketone
d) Carboxylic acid
The product of the reaction between a ketone and phenylhydrazine is:
a) Hydrazone
b) Alcohol
c) Ester
d) Aldehyde
Aldehydes can be reduced to primary alcohols using:
a) LiAlH₄
b) NaOH
c) KMnO₄
d) HNO₃
The reaction of aldehydes with NaOH followed by acidification produces:
a) Aldol
b) Ester
c) Carboxylic acid
d) Alcohol
The reaction of ketones with nitrous acid forms:
a) Nitroso compound
b) Ester
c) Alcohol
d) Aldehyde
The reagent used to distinguish between aldehydes and ketones is:
a) Tollens’ reagent
b) NaBH₄
c) HCN
d) Schiff’s reagent
The reaction of aldehydes with excess alcohol and an acid catalyst results in:
a) Acetal
b) Ester
c) Ketone
d) Carboxylic acid
The reaction of aldehydes with sodium hydroxide and iodine is known as:
a) Iodoform test
b) Tollens’ test
c) Fehling’s test
d) Schiff’s test
Ketones react with which of the following to form 2,4-dinitrophenylhydrazones?
a) Phenylhydrazine
b) Sodium bisulphite
c) Sodium hydroxide
d) Acetic acid
Aldehydes can be identified using the:
a) Benedict’s solution
b) Tollens’ reagent
c) Br₂ in water
d) Fehling’s solution
The reaction of ketones with hydrochloric acid in the presence of zinc dust produces:
a) Aldehyde
b) Carboxylic acid
c) Alcohol
d) Ester
Which of the following reactions involves the formation of a carbinolamine?
a) Reaction with primary amine
b) Reaction with NaBH₄
c) Reaction with HCN
d) Reaction with phenylhydrazine
The reaction of aldehydes with alcohols and an acid catalyst forms:
a) Acetal
b) Ketone
c) Carboxylic acid
d) Ester
The product formed by the oxidation of a primary alcohol to an aldehyde is:
a) Aldehyde
b) Ketone
c) Ester
d) Carboxylic acid
The reaction of ketones with sodium bisulphite forms:
a) Bisulphite addition compound
b) Aldehyde
c) Carboxylic acid
d) Ester
The reagent used to perform the iodoform test on ketones is:
a) Iodine and NaOH
b) Tollens’ reagent
c) Fehling’s solution
d) Schiff’s reagent
The product of the reaction between a ketone and a Grignard reagent is:
a) Tertiary alcohol
b) Aldehyde
c) Ester
d) Carboxylic acid
Aldehydes react with which of the following to form a diol?
a) KMnO₄
b) HCN
c) NaBH₄
d) Fehling’s solution
The reaction of aldehydes with hydrogen peroxide in the presence of an acid catalyst results in:
a) Hydrate formation
b) Ester formation
c) Ketone formation
d) Aldol condensation
The reaction of ketones with hydrogen cyanide forms:
a) Cyanohydrin
b) Aldehyde
c) Alcohol
d) Ester
The reagent used in the reduction of ketones to secondary alcohols is:
a) LiAlH₄
b) NaOH
c) KMnO₄
d) HNO₃
The product formed from the reaction of aldehydes with phenylhydrazine is called:
a) Phenylhydrazone
b) Acetal
c) Carboxylic acid
d) Ester
The oxidation of a ketone with mild oxidizing agents results in:
a) No reaction
b) Aldehyde
c) Carboxylic acid
d) Ester
The reaction of aldehydes with acid chlorides and an acid catalyst produces:
a) Anhydrides
b) Carboxylic acids
c) Esters
d) Acetals
The product formed when a ketone reacts with a secondary amine is:
a) Imine
b) Aldehyde
c) Carboxylic acid
d) Ester
The reagent used to detect aldehydes via a redox reaction is:
a) Fehling’s solution
b) NaBH₄
c) HCN
d) NaOH
In the aldol condensation reaction, the aldehyde reacts with:
a) Another aldehyde or ketone
b) Sodium hydroxide
c) Hydrochloric acid
d) Sodium chloride
The reaction of aldehydes with alcohols in the presence of an acid forms:
a) Acetals
b) Ketones
c) Carboxylic acids
d) Esters
The product of the oxidation of an aldehyde is:
a) Carboxylic acid
b) Ketone
c) Alcohol
d) Ester
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