Functional Groups: Interactive Learning Quizzes for Chemistry

Question 1

Which functional group below contains a carbon-carbon double bond (C=C)?

Accepted Answer

Alkene (-C=C-)

Answer

Alcohol (-OH)

Answer

Aldehyde (-CHO)

Question 2

Which characteristic does NOT apply to functional groups?

Accepted Answer

React independently of the rest of the molecule

Answer

Specific groups of atoms in organic molecules

Answer

Determine chemical behavior and reactivity

Answer

Influence the physical properties of compounds

Question 3

Identify the functional group in the molecule CH3-CH2-OH:

Accepted Answer

Alcohol

Answer

Aldehyde

Answer

Ketone

Answer

Carboxylic acid

Question 4

The polarity of a functional group refers to:

Accepted Answer

The distribution of electrons within the group

Answer

The ability to form hydrogen bonds

Answer

The presence of charged atoms

Answer

The reactivity of the group

Question 5

Identify the hybridization of the carbon atom in the carbonyl group of ketones:

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 6

Identify the product of the reaction between an alcohol and a carboxylic acid:

Accepted Answer

Ester

Answer

Ether

Answer

Amide

Answer

Aldehyde

Question 7

Which functional group is commonly used as a solvent in paints and coatings?

Accepted Answer

Alcohols

Answer

Aldehydes

Answer

Ketones

Answer

Esters

Question 8

Identify the functional group associated with the sweet taste of many fruits:

Accepted Answer

Ester

Answer

Alcohol

Answer

Aldehyde

Answer

Ketone

Question 9

Which functional group is characteristic of alcohols?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-C=O

Question 10

Identify the major product resulting from the reaction between an amine and a carboxylic acid.

Accepted Answer

Amide

Answer

Ester

Answer

Ether

Answer

Aldehyde

Question 11

Which compound among the following has the highest boiling point?

Accepted Answer

CH3CH2CH2CH2OH

Answer

CH3OH

Answer

CH3CH2OH

Answer

CH3CH2CH2OH

Question 12

Which functional group is associated with the sour taste of vinegar?

Accepted Answer

Carboxylic acid

Answer

Alcohol

Answer

Aldehyde

Answer

Ketone

Question 13

Identify the functional group that is responsible for the acidic properties of organic compounds and has a general formula of R-COOH:

Accepted Answer

Carboxylic acid

Answer

Amine

Answer

Alkene

Answer

Ether

Question 14

Which of the following compounds contains a hydroxyl group (-OH) bonded to a carbon atom?

Accepted Answer

Ethanol

Answer

Methane

Answer

Ethene

Answer

Propane

Question 15

Which functional group is present in amino acids and gives them their basic properties?

Accepted Answer

Amide

Answer

Ester

Answer

Ether

Answer

Aldehyde

Question 16

What is the general formula for an ether, a functional group characterized by an oxygen atom bonded to two carbon atoms?

Accepted Answer

R-OR'

Answer

R-OH

Answer

R-COOH

Answer

R-CHO

Question 17

What is the IUPAC nomenclature for the functional group with the structure -COOH?

Accepted Answer

Carboxyl

Answer

Hydroxyl

Answer

Carbonyl

Answer

Amino

Question 18

How do functional groups influence the solubility of organic compounds in water and organic solvents?

Accepted Answer

Polar functional groups increase water solubility, while nonpolar groups increase solubility in organic solvents.

Answer

Functional groups increase solubility in both water and organic solvents.

Answer

Hydrogen bonding functional groups decrease solubility in both water and organic solvents.

Answer

Functional groups have no impact on the solubility of organic compounds.

Question 19

How can IR spectroscopy be used to differentiate between primary, secondary, and tertiary alcohols?

Accepted Answer

By comparing the frequency of the O-H stretching vibration.

Answer

By measuring the intensity of the C-H stretching vibration.

Answer

By identifying the presence of additional functional groups.

Question 20

Which household product contains a carboxylic acid functional group, and how does this functional group contribute to the product's function?

Accepted Answer

Soap

Answer

Sugar

Answer

Baking soda

Answer

Salt

Question 21

How does the polarity of the carbonyl group influence the acidity of aldehydes and ketones?

Accepted Answer

The polar carbonyl group stabilizes the negative charge on the conjugate base, increasing the acidity of aldehydes and ketones.

Answer

The polar carbonyl group attracts electrons from the alpha-hydrogen, making it more difficult to remove and decreasing acidity.

Answer

The polarity of the carbonyl group has no impact on the acidity of aldehydes and ketones.

Question 22

What is the primary product formed when an aldehyde reacts with a primary amine?

Accepted Answer

An imine

Answer

An alcohol

Answer

An enamine

Answer

A hemiacetal

Question 23

Which functional group is the source of the acidity exhibited by carboxylic acids?

Accepted Answer

Carboxyl group

Answer

Hydroxyl group

Answer

Carbonyl group

Answer

Ether group

Question 24

When an alcohol undergoes a reaction with a carboxylic acid, what type of reaction takes place?

Accepted Answer

Esterification

Answer

Oxidation

Answer

Reduction

Answer

Dehydration

Question 25

Which functional group contains a triple bond?

Accepted Answer

Alkyne

Answer

Alkene

Answer

Aldehyde

Answer

Ketone

Question 26

Which functional group is classified as nucleophilic?

Accepted Answer

Amine

Answer

Alkyl halide

Answer

Aldehyde

Answer

Ketone

Question 27

Identify the functional group present in carbohydrates.

Accepted Answer

Hydroxyl group

Answer

Carbonyl group

Answer

Amine group

Answer

Ether group

Question 28

Outline a synthetic pathway to convert a primary alcohol to an alkyl halide.

Accepted Answer

Alcohol + HX → Alkyl halide + HOH

Accepted Answer

Alcohol + PBr3 → Alkyl bromide + H3PO3

Accepted Answer

Alcohol + SOCl2 → Alkyl chloride + SO2 + HCl

Answer

Alcohol + NaH → Alkoxide + H2

Question 29

Which functional group is present in the molecule CH3CH2OH? Predict its solubility in water:

Accepted Answer

Alcohol

Answer

Alkene

Answer

Amine

Answer

Carboxylic acid

Question 30

Identify the functional group present in the molecule CH3-CH2-CHO:

Accepted Answer

Aldehyde

Answer

Alcohol

Answer

Ketone

Answer

Carboxylic acid

Question 31

Predict the product formed when an alcohol reacts with a carboxylic acid in the presence of an acid catalyst:

Accepted Answer

Ester

Answer

Ether

Answer

Ketone

Answer

Amide

Question 32

Which of the following compounds exhibits a tertiary amine functional group?

Accepted Answer

(CH3)3-N

Answer

CH3-CH2-NH2

Answer

CH3-CH2-CH2-NH2

Answer

(CH3)2-NH

Question 33

Identify the functional group that is polar aprotic:

Accepted Answer

Ether

Answer

Alcohol

Answer

Ketone

Answer

Aldehyde

Question 34

Which of the following compounds can undergo electrophilic aromatic substitution reactions?

Accepted Answer

Benzene

Answer

Ethene

Answer

Propane

Answer

Methane

Question 35

Which of the following compounds is most likely to exhibit electrophilic addition reactions?

Accepted Answer

Alkene

Answer

Alkyne

Answer

Aldehyde

Answer

Carboxylic acid

Question 36

Which functional group is characterized by a carbonyl group (C=O) bonded to two alkyl groups?

Accepted Answer

Ketone

Answer

Carboxylic acid

Answer

Ester

Answer

Aldehyde

Question 37

Which functional group imparts acidic properties to organic compounds?

Accepted Answer

Carboxylic acid

Answer

Ester

Answer

Amine

Answer

Alcohol

Question 38

A functional group featuring a triple bond between two carbon atoms is:

Accepted Answer

Alkyne

Answer

Alkene

Answer

Alkyl halide

Question 39

A functional group consisting of a benzene ring with alternating single and double bonds is classified as:

Accepted Answer

Aromatic hydrocarbon

Answer

Alkyne

Answer

Alkene

Answer

Cyclic alkane

Question 40

Which functional group enables organic compounds to undergo nucleophilic addition reactions?

Accepted Answer

Carbonyl

Answer

Alkyl

Answer

Alcohol

Answer

Ether

Question 41

A functional group containing a nitrogen atom bonded to three hydrogen atoms is known as:

Accepted Answer

Amine

Answer

Alcohol

Answer

Ketone

Answer

Ether

Question 42

Which functional group is associated with the sweet taste of many organic compounds?

Accepted Answer

Ester

Answer

Alcohol

Answer

Aldehyde

Answer

Ketone

Question 43

A functional group that includes a halogen atom bonded to an alkyl group is called:

Accepted Answer

Alkyl halide

Answer

Ketone

Answer

Alcohol

Question 44

Identify the characteristic of an alcohol functional group:

Accepted Answer

Contains an -OH group

Answer

Reacts with alkenes

Answer

Participates in dehydration reactions

Answer

Forms ionic bonds

Question 45

What is the hybridization of the carbon atom in a ketone functional group?

Accepted Answer

sp2

Answer

sp3d

Answer

sp

Answer

sp3

Question 46

Which of the following reactions is a characteristic of an aldehyde functional group?

Accepted Answer

Oxidation to a carboxylic acid

Answer

Polymerization

Answer

Addition of water

Answer

Esterification

Question 47

Which functional group is present in esters?

Accepted Answer

-COOR

Answer

-COOH

Answer

-OH

Answer

-NH2

Question 48

Which functional group has the highest priority in assigning IUPAC names?

Accepted Answer

Carboxylic acid

Answer

Aldehyde

Answer

Alcohol

Answer

Ether

Question 49

What is the hybridization of the nitrogen atom in an amide functional group?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d2

Question 50

Which of the following reactions is typical for an amine functional group?

Accepted Answer

Protonation with acids to form salts

Answer

Polymerization

Answer

Addition to double bonds

Question 51

Which of the following compounds is most likely to undergo electrophilic aromatic substitution?

Accepted Answer

Benzene ring with an electron-withdrawing group

Answer

Alkyne

Answer

Benzene ring with an electron-donating group

Answer

Alkene

Question 52

Which functional group is present in aldehydes?

Accepted Answer

-CHO

Answer

-COOH

Answer

-NH2

Answer

-OH