Organic Chemistry Quizzes: Test Your Knowledge of Carbon Compounds

Question 1

Which characteristic is unique to organic compounds?

Accepted Answer

They contain carbon atoms.

Answer

They are highly volatile.

Answer

They are insoluble in water.

Answer

They are all solid at room temperature.

Question 2

Which functional group characterizes alcohols?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-CHO

Question 3

Which reaction type is used to synthesize alkenes?

Accepted Answer

Dehydration of alcohols

Answer

Oxidation of alkanes

Answer

Hydrolysis of esters

Answer

Reduction of aldehydes

Question 4

What hybridization describes the carbon atom in methane (CH4)?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 5

Identify the biodegradable polymer.

Accepted Answer

Polylactic acid

Answer

Polyethylene

Answer

Polystyrene

Answer

Polyvinyl chloride

Question 6

What is the role of a catalyst in a chemical reaction?

Accepted Answer

Provide an alternative reaction pathway.

Answer

Increase activation energy.

Answer

Increase reactant concentration.

Answer

Decrease reaction temperature.

Question 7

Which substance is classified as a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Sodium hydroxide

Question 8

Which of the following is a characteristic of organic compounds?

Accepted Answer

Covalent bonding

Answer

High melting/boiling points

Answer

Water insolubility

Answer

Ionic bonding

Question 9

The functional group that characterizes carboxylic acids is:

Accepted Answer

-COOH

Answer

-OH

Answer

-NH2

Answer

-C=O

Question 10

Which type of reaction involves the addition of a new atom or group of atoms to a double bond?

Accepted Answer

Addition

Answer

Substitution

Answer

Elimination

Answer

Redox

Question 11

The hybridization of carbon atoms in benzene is:

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d2

Question 12

Which of the following compounds is a structural isomer of pentane?

Accepted Answer

2-methylbutane

Answer

Butane

Answer

Hexane

Answer

Propene

Question 13

The process by which glucose is broken down in the presence of oxygen is called:

Accepted Answer

Respiration

Answer

Glycolysis

Answer

Fermentation

Answer

Hydrolysis

Question 14

Which of the following is a secondary alcohol?

Accepted Answer

2-propanol

Answer

Methanol

Answer

Ethanol

Answer

1-butanol

Question 15

The molecular formula of a compound is C3H6O. What is its empirical formula?

Accepted Answer

CH2O

Answer

C2H4O

Answer

C3H6O2

Answer

C4H8O3

Question 16

Which of the following reactions is used to prepare alkynes?

Accepted Answer

Dehydrohalogenation

Answer

Hydrogenation

Answer

Halogenation

Answer

Oxidation

Question 17

Which functional group contains a carbon-nitrogen double bond?

Accepted Answer

Amine

Answer

Alcohol

Answer

Aldehyde

Answer

Ketone

Question 18

Which type of hybridization do the carbon atoms in an alkene have?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 19

Which type of intermolecular force is responsible for the high boiling point of water?

Accepted Answer

Hydrogen bonding

Answer

Dipole-dipole forces

Answer

London dispersion forces

Answer

Ion-dipole forces

Question 20

Which of the following solvents is polar?

Accepted Answer

Water

Answer

Hexane

Answer

Benzene

Answer

Carbon tetrachloride

Question 21

Which of the following reactions is an example of electrophilic aromatic substitution?

Accepted Answer

Nitration

Answer

Hydrogenation

Answer

Addition

Answer

Elimination

Question 22

What is the product of the following reaction: CH3COOH + NaOH → ?

Accepted Answer

CH3COONa + H2O

Answer

CH3CH2OH + Na2CO3

Answer

CH3CH2COONa + H2O

Answer

CH3COOH + Na2O

Question 23

What is the hybridization of the carbon atoms in ethane?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d2

Question 24

Which functional group is characteristic of alcohols?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-CHO

Question 25

What type of reaction occurs when an alcohol reacts with a carboxylic acid?

Accepted Answer

Condensation (esterification)

Answer

Addition

Answer

Substitution

Answer

Elimination

Question 26

Determine the IUPAC name for the following compound: CH3CH2CH(CH3)CH2CH3

Accepted Answer

2-Methylpentane

Answer

3-Methylpentane

Answer

4-Methylpentane

Answer

2,3-Dimethylbutane

Question 27

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Ethanoic acid

Question 28

Identify the product of the reaction between a primary amine and a carboxylic acid.

Accepted Answer

Amide

Answer

Ester

Answer

Ether

Answer

Alcohol

Question 29

Which of the following is an example of a polymer?

Accepted Answer

Polyethylene

Answer

Sodium chloride

Answer

Water

Answer

Carbon dioxide

Question 30

Which of the following is a defining characteristic of organic compounds?

Accepted Answer

Contain carbon

Answer

Generally soluble in oil

Answer

Have low melting and boiling points

Answer

Exist solely as solids

Question 31

Identify the functional group responsible for the acidity of carboxylic acids.

Accepted Answer

-COOH

Answer

-OH

Answer

-C=O

Answer

-NH2

Question 32

When an alcohol reacts with an organic acid, what type of reaction occurs?

Accepted Answer

Esterification

Answer

Addition

Answer

Substitution

Answer

Polymerization

Question 33

Which compound is an isomer of butane?

Accepted Answer

2-methylpropane

Answer

Pentane

Answer

Propane

Answer

Ethane

Question 34

Which of the following is classified as a hydrocarbon?

Accepted Answer

Methane

Answer

Ethanol

Answer

Acetic acid

Answer

Sodium chloride

Question 35

Identify the hybridization of the carbon atom involved in the C=O bond of a ketone.

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 36

Which solvent exhibits polar characteristics?

Accepted Answer

Water

Answer

Benzene

Answer

Hexane

Answer

Carbon tetrachloride

Question 37

Predict the product formed from the reaction between an aldehyde and a primary amine.

Accepted Answer

Imine

Answer

Ketone

Answer

Alcohol

Answer

Ester

Question 38

Which attribute is NOT characteristic of most organic compounds?

Accepted Answer

Ionic bonding

Answer

Covalent bonding

Answer

High melting and boiling points

Answer

Carbon as a primary constituent

Question 39

In methane (CH4), what type of hybridization is observed for the carbon atom?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 40

Which functional group is distinctive to alcohols?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH2

Answer

-CHO

Question 41

When an alcohol reacts with an organic acid, what type of reaction takes place?

Accepted Answer

Esterification

Answer

Substitution

Answer

Addition

Answer

Elimination

Question 42

Around the carbon atom in ethene (C2H4), what molecular geometry is observed?

Accepted Answer

Trigonal planar

Answer

Linear

Answer

Tetrahedral

Answer

Trigonal pyramidal

Question 43

Which substance qualifies as a polymer?

Accepted Answer

Polyethylene

Answer

Sodium chloride

Answer

Water

Answer

Carbon dioxide

Question 44

In proteins, what serves as the fundamental building block?

Accepted Answer

Amino acids

Answer

Nucleotides

Answer

Fatty acids

Answer

Monosaccharides

Question 45

In methane (CH4), what is the hybridization of the central carbon atom?

Accepted Answer

sp³

Answer

sp

Answer

sp³d

Answer

sp²

Question 46

Which reaction represents a nucleophilic substitution?

Accepted Answer

RX + Nu- → RNu + X-

Answer

RNH2 + HCl → RNH3+ + Cl-

Answer

RCOOH + NaOH → RCOONa + H2O

Answer

R-X + H-Y → R-Y + H-X

Question 47

According to IUPAC nomenclature rules, which functional group has the highest priority?

Accepted Answer

Carboxylic acid

Answer

Ketone

Answer

Aldehyde

Answer

Alcohol

Question 48

Which characteristic is unique to aromatic compounds?

Accepted Answer

Planarity and resonance

Answer

High reactivity

Answer

Presence of double bonds

Answer

Solubility in water

Question 49

Which reaction can be used to synthesize alkenes?

Accepted Answer

Dehydration

Answer

Oxidation

Answer

Hydrogenation

Answer

Hydrolysis

Question 50

What is a defining characteristic of organic compounds?

Accepted Answer

They always contain carbon atoms.

Answer

They are typically soluble in water.

Answer

They are always flammable.

Answer

They have low melting points.

Question 51

What is the IUPAC name for the compound with the formula CH₃CH₂OH?

Accepted Answer

Ethanol

Answer

Propanol

Answer

Butanol

Answer

Methanol

Question 52

What is the hybridization state of the carbon atom in methane (CH₄)?

Accepted Answer

sp³

Answer

sp²

Answer

sp

Answer

sp³d

Question 53

What is the major product of the reaction between propene (CH₃CH=CH₂) and hydrogen bromide (HBr)?

Accepted Answer

2-bromopropane (CH₃CHBrCH₃)

Answer

1,2-dibromopropane (CH₃CHBrCH₂Br)

Answer

1-bromopropane (CH₂=CHCH₂Br)

Question 54

Which of the following is a strong nucleophile?

Accepted Answer

Hydroxide ion (OH⁻)

Answer

Water (H₂O)

Answer

Methanol (CH₃OH)

Answer

Chloromethane (CH₃Cl)

Question 55

What is the hybridization state of the nitrogen atom in pyridine?

Accepted Answer

sp²

Answer

sp³d

Answer

sp³

Answer

sp

Question 56

Which of the following is a polymer?

Accepted Answer

Polyethylene

Answer

Methane

Answer

Benzene