DAT DAT - Dental Admission Organic Chemistry: Functional Groups 2

Question 1

Oxidation of a primary alcohol produces which compound?

Accepted Answer

An aldehyde

Answer

Mild oxidation of a primary alcohol produces an aldehyde; further oxidation yields a carboxylic acid.

Question 2

Tollens' reagent is used to distinguish aldehydes from ketones because:

Accepted Answer

It oxidizes aldehydes, producing a silver mirror, while ketones do not react

Answer

Tollens' reagent (ammoniacal silver nitrate) oxidizes aldehydes to carboxylate ions while depositing silver metal as a characteristic mirror; ketones do not react.

Question 3

Saponification is defined as the base-catalyzed hydrolysis of:

Accepted Answer

Esters

Answer

Saponification is the reaction of an ester with a strong base (e.g., NaOH) to produce an alcohol and a carboxylate salt (soap).

Question 4

Which reaction converts a carboxylic acid into an amide?

Accepted Answer

Reaction with an amine (acylation)

Answer

An amide is formed when a carboxylic acid (or activated derivative) reacts with an amine, creating the -CONH- linkage and releasing water.

Question 5

Treating an alcohol with HBr produces:

Accepted Answer

An alkyl bromide

Answer

The hydroxyl group (-OH) of an alcohol is substituted by bromine when treated with HBr, producing an alkyl halide via SN1 or SN2 mechanism.

DAT Practice Test

DAT Practice Test

DAT DAT - Dental Admission Organic Chemistry: Functional Groups 2