Free MCQs & Online Quiz Practice for Exams

Q: The reduction of carbonyl to methylene is carried out with:

A) Catalytic reduction

B) Metal hydride

C) Clemmensen method

D) Lindlar's catalyst

Q: Formaldehyde gives an addition product with methyl magnesium iodide which on hydrolysis gives:

A) n-Propyl alcohol

B) isopropyl alcohol

C) methyl alcohol

D) ethyl alcohol

Q: Which of the following compounds can react with ammoniacal silver nitrate (Tollens') to form a silver mirror?

A) Acetone

B) Ethanol

C) Dimethyl ether

D) Ethanal

Q: Which of the following compounds will form a precipitate of cupric oxide from Fehling's reagent but does not react with sodium metal?

A) C₂H₅OH (ethanol)

B) C₂H₅CHO

C) CH₃CH(OH)CH₃

D) CH₃OCH₃

Q: IUPAC name of acetone is:

A) Ethanone

B) Propanone

C) Ethanal

D) Propanal

Q: Formalin is:

A) 10% aqueous solution of formaldehyde

B) 20% aqueous solution of formaldehyde

C) 40% aqueous solution of formaldehyde

D) 5% aqueous solution of formaldehyde

Q: An alkene upon ozonolysis gives only one type of aldehyde in the product. Identify that alkene:

A) but-1-ene

B) 2,3-dimethy

C) but-2-ene

D) lbut-2-ene

Q: Which of the following alkynes would not yield a ketone upon hydration?

A) Acetylene

B) Propyne

C) But-1-yne

D) But-2-yne

Q: Geminal diol can be obtained by:

A) Hydration of alcohol

B) Hydration of aldehyde

C) Hydrogenation of ketone

D) Hydration of both aldehyde and ketone

Q: Schiff base can be obtained by reaction of which amine with a ketone?

A) Primary amine

B) Secondary amine

C) Tertiary amine

D) Quaternary amine

Q: A hemiacetal contains both:

A) Alcohol and aldehyde functional groups

B) Alcohol and ether functional groups

C) Aldehyde and ether functional groups

D) Alcohol and carboxylic acid functional groups

Q: Which aldehyde is more reactive towards nucleophilic addition?

A) Formaldehyde

B) Acetaldehyde

C) Butyraldehyde

D) Propionaldehyde

Q: Which type of reaction is involved in the formation of acetals from alcohols on treatment with aldehydes?

A) Nucleophilic substitution

B) Electrophilic substitution

C) Oxidation

D) Nucleophilic addition

Q: Which of the following methods does not give ketones?

A) Hydration of alkyne

B) Oxidation of primary alcohol

C) Oxidation of secondary alcohols

D) Friedel–Crafts acylation

Q: Which of the following represents the formula of an aromatic carboxylic acid?

A) HCOOH

B) CH₃COOH

C) C₆H₅COOH

D) C₂H₅OH

Q: Which of the following acids is found in rancid butter?

A) CH₃COOH

B) C₂H₅COOH

C) C₄H₈O₂

D) C₆H₅COOH

Q: The compound with the highest boiling point is:

A) Acetic acid

B) Water

C) Ethyl alcohol

D) Diethyl ether

Q: In which of the following compounds the carbon atom does not show sp²-hybridization?

A) Methanal

B) Methanol

C) Methanoic acid

D) Acetone

Q: Which is the strongest acid?

A) Ethanol

B) Acetic acid

C) Chloroacetic acid

D) Fluoroacetic acid

Q: Acetic acid can be prepared by the hydrolysis of:

A) Methyl cyanide

B) Methylmagnesium chloride

C) Ethanal (acetaldehyde)

D) Ethanol