Organic Chemistry Basics: Master the Fundamentals with Interactive Quizzes

Question 1

Which of the following is NOT a characteristic of organic compounds?

Accepted Answer

Electrolytic conductivity

Answer

Primarily composed of carbon and hydrogen

Answer

Typically have low melting and boiling points

Answer

Insoluble in water

Question 2

The hybridization of the carbon atom in an alkene is:

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 3

Which of the following reactions is characteristic of alkanes?

Accepted Answer

Addition

Answer

Substitution

Answer

Elimination

Answer

Polymerization

Question 4

The boiling point of an alcohol is higher than that of a hydrocarbon with a similar molecular weight due to:

Accepted Answer

Stronger intermolecular forces

Answer

Greater molecular weight

Answer

Lower density

Answer

Higher polarity

Question 5

Which of the following solvents is best for extracting an organic compound from an aqueous solution?

Accepted Answer

Hexane

Answer

Water

Answer

Methanol

Answer

Sodium hydroxide solution

Question 6

Which of the following is a structural isomer of butane?

Accepted Answer

2-methylpropane

Answer

Propane

Answer

Ethane

Answer

Pentane

Question 7

Which of the following compounds is an aromatic hydrocarbon?

Accepted Answer

Benzene

Answer

Ethene

Answer

Propane

Answer

Butane

Question 8

The reaction of an alcohol with an acid anhydride forms:

Accepted Answer

An ester

Answer

An amide

Answer

An aldehyde

Answer

A ketone

Question 9

Which functional group distinguishes an aldehyde?

Accepted Answer

-CHO

Answer

-OH

Answer

-COOH

Answer

-NH2

Question 10

Determine the hybridization of the carbon atom in methane (CH4):

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 11

Identify a characteristic physical property of organic compounds:

Accepted Answer

Low melting and boiling points

Answer

High solubility in water

Answer

Good electrical conductivity

Answer

Metallic luster

Question 12

Determine the hybridization of the nitrogen atom in ammonia (NH3):

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 13

Identify a primary alcohol:

Accepted Answer

CH3CH2OH

Answer

CH3OH

Answer

(CH3)2CHOH

Answer

(CH3)3COH

Question 14

Determine the product of the reaction between an alkene and hydrogen:

Accepted Answer

An alkane

Answer

An alkene

Answer

An alcohol

Answer

An ether

Question 15

What is the hybridization of the carbon atom in the following molecule: CH2=CH-CH3?

Accepted Answer

sp2

Answer

sp

Answer

sp3

Answer

sp3d

Question 16

Predict the product of the following reaction: CH3CH2CH2Br + NaOH →

Accepted Answer

CH3CH2CH2OH

Answer

CH3CH=CH2

Answer

CH3CH2COOH

Answer

CH3CH2CH3

Question 17

Which characteristic is true about organic molecules?

Accepted Answer

They invariably contain carbon atoms.

Answer

They are generally soluble in water.

Answer

They have high boiling points.

Answer

They are all toxic.

Question 18

What is the primary purpose of a reflux condenser in an organic reaction?

Accepted Answer

To prevent the loss of volatile reactants

Answer

To elevate the temperature of the reaction

Answer

To eliminate impurities from the reaction mixture

Answer

To agitate the reaction mixture

Question 19

Identify the tertiary alcohol among the following compounds:

Accepted Answer

(CH3)3COH

Answer

CH3CH2OH

Answer

(CH3)2CHOH

Answer

CH3CH(OH)CH3

Question 20

Which of the following represents the correct structural formula of ethane?

Accepted Answer

CH₃-CH₃

Answer

CH₄

Answer

CH₂=CH₂

Answer

C₂H₆O

Question 21

Which of the following is the functional group characteristic of an alcohol?

Accepted Answer

-OH

Answer

-COOH

Answer

-NH₂

Answer

-C=O

Question 22

What is the hybridization state of carbon atoms in ethene?

Accepted Answer

sp²

Answer

sp

Answer

sp³

Answer

sp³d

Question 23

Identify the isomer of butane from the following options:

Accepted Answer

2-methylpropane

Answer

1-butanol

Answer

butanoic acid

Answer

ethene

Question 24

Which of the following compounds undergoes electrophilic addition reactions?

Accepted Answer

Ethene

Answer

Ethane

Answer

Ethyne

Answer

Benzene

Question 25

What is the hybridization of the nitrogen atom in an amine?

Accepted Answer

sp³

Answer

sp

Answer

sp²

Answer

sp³d

Question 26

Which functional group characterizes an alcohol?

Accepted Answer

Hydroxyl

Answer

Amine

Answer

Carbonyl

Answer

Ether

Question 27

Identify the isomer of butane:

Accepted Answer

2-methylpropane

Answer

Pentane

Answer

Hexane

Answer

Ethane

Question 28

The major product of the reaction between ethanol and sodium is:

Accepted Answer

Sodium ethoxide

Answer

Ethane

Answer

Ethylene

Answer

Hydrogen gas

Question 29

Following IUPAC nomenclature rules, what is the correct name for the compound CH3CH2CH(CH3)CH2CH3?

Accepted Answer

2-Methylpentane

Answer

3-Methylpentane

Answer

2-Ethylbutane

Answer

3-Ethylbutane

Question 30

Which of the following molecules is polar?

Accepted Answer

H2O

Answer

CH4

Answer

CO2

Answer

CCl4

Question 31

Which of the following accurately describes the properties of an aldehyde functional group (-CHO)?

Accepted Answer

Forms hydrogen bonds with itself and water

Answer

Nonpolar and lacks a dipole moment

Answer

Strong base that reacts easily with acids

Answer

Oxidizable to an ester

Question 32

Which characteristic is NOT typically associated with organic molecules?

Accepted Answer

Predominance of ionic bonding

Answer

Carbon as the structural backbone

Answer

Generally large molecular size

Answer

Covalent bonding

Question 33

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

Accepted Answer

sp³

Answer

sp

Answer

sp³d

Answer

sp²

Question 34

Select the definition of a resonance structure.

Accepted Answer

A structure that depicts the delocalization of electrons over multiple atomic centers

Answer

A structure that indicates the specific bonding between atoms

Answer

A structure that represents the three-dimensional shape of a molecule

Question 35

What is the hybridization of the nitrogen atom in an amine (R-NH2)?

Accepted Answer

sp³

Answer

sp³d

Answer

sp²

Answer

sp

Question 36

Which functional group generally exhibits the greatest polarity?

Accepted Answer

Carboxylic acid

Answer

Ketone

Answer

Alcohol

Answer

Ether

Question 37

Define a reaction mechanism.

Accepted Answer

A stepwise description of the elementary steps involved in a chemical reaction

Answer

A mathematical equation that represents the stoichiometry of a reaction

Answer

A diagram that illustrates the energy profile of a reaction

Question 38

What is the hybridization of the carbon atom in an sp² hybridized alkene?

Accepted Answer

sp²

Answer

sp

Answer

sp³d

Answer

sp³

Question 39

Identify the functional group containing a carbon-oxygen double bond.

Accepted Answer

Carbonyl

Answer

Amino

Answer

Alkyl

Answer

Carboxyl

Question 40

Determine the molecular formula of ethene.

Accepted Answer

C2H4

Answer

C3H6

Answer

CH4

Answer

C4H8

Question 41

Determine the hybridization of the carbon atom in methane.

Accepted Answer

sp3

Answer

sp

Answer

sp3d

Answer

sp2

Question 42

Which of the following compounds has the highest boiling point?

Accepted Answer

Butane

Answer

Ethane

Answer

Methane

Answer

Propane

Question 43

Determine the hybridization of the nitrogen atom in ammonia.

Accepted Answer

sp3

Answer

sp2

Answer

sp3d

Answer

sp

Question 44

Which of the following bonds is polar covalent?

Accepted Answer

H-Cl

Answer

C-C

Answer

O-O