DAT DAT - Dental Admission Organic Chemistry: Functional Groups 1

Question 1

Which functional group is characteristic of an aldehyde?

Accepted Answer

-CHO

Answer

Aldehydes contain a terminal carbonyl group (-CHO) where the carbonyl carbon is bonded to at least one hydrogen atom.

Question 2

A compound containing the -NH₂ functional group is classified as:

Accepted Answer

An amine

Answer

The -NH₂ (amino) group is the defining functional group of primary amines.

Question 3

The functional group -COOH is found in which class of organic compounds?

Accepted Answer

Carboxylic acids

Answer

The carboxyl group (-COOH) is the defining functional group of carboxylic acids and acts as a weak acid in solution.

Question 4

What type of functional group is present in ethanol (CH₃CH₂OH)?

Accepted Answer

Alcohol

Answer

Ethanol contains a hydroxyl group (-OH) attached to a carbon chain, classifying it as a primary alcohol.

Question 5

Esters are formed by the condensation reaction between:

Accepted Answer

An alcohol and a carboxylic acid

Answer

Esterification is the condensation reaction between an alcohol and a carboxylic acid, producing an ester and water.

DAT Practice Test