About this Study Set
This study set covers Organic Chemistry through
25 practice questions.
An exploration of carbon-based compounds, functional groups, and molecular structures. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 25 questions from the
Fundamentals of Organic Chemistry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the defining element present in all organic compounds?
-
A
Nitrogen
-
B
Carbon
-
C
Oxygen
-
D
Hydrogen
2
Which hydrocarbon series consists of molecules with only single covalent bonds between carbon atoms?
-
A
Alkanes
-
B
Alkenes
-
C
Alkynes
-
D
Arenes
3
What is the chemical formula for methane, the simplest alkane?
-
A
CH2
-
B
C2H6
-
C
CH4
-
D
C3H8
4
Which functional group is characteristic of alcohols?
-
A
-COOH
-
B
-OH
-
C
-NH2
-
D
-CHO
5
What type of bond is formed when two atoms share a pair of electrons in an organic molecule?
-
A
Ionic
-
B
Metallic
-
C
Hydrogen
-
D
Covalent
6
Which process involves the breakdown of long-chain hydrocarbons into smaller, more useful molecules?
-
A
Polymerization
-
B
Cracking
-
C
Distillation
-
D
Oxidation
7
What is the general formula for a non-cyclic alkene?
-
A
CnH2n+2
-
B
CnH2n
-
C
CnH2n-2
-
D
CnHn
8
Which substance is the primary monomer used to produce polyethylene plastic?
-
A
Propene
-
B
Butene
-
C
Ethene
-
D
Benzene
9
What is the IUPAC name for a three-carbon alkane chain?
-
A
Methane
-
B
Ethane
-
C
Propane
-
D
Butane
10
Which of these molecules contains a triple bond between two carbon atoms?
-
A
Ethane
-
B
Ethene
-
C
Ethyne
-
D
Propane
11
What functional group is found in carboxylic acids?
-
A
-OH
-
B
-COOH
-
C
-CHO
-
D
-CO-
12
Which hydrocarbon is the primary component of natural gas?
-
A
Propane
-
B
Methane
-
C
Butane
-
D
Octane
13
In organic chemistry, what does the prefix 'meth-' indicate in a carbon chain?
-
A
1 carbon atom
-
B
2 carbon atoms
-
C
3 carbon atoms
-
D
4 carbon atoms
14
What is the name of the simplest aromatic hydrocarbon?
-
A
Cyclohexane
-
B
Benzene
-
C
Toluene
-
D
Phenol
15
Which element, other than carbon, is most commonly bonded to carbon in hydrocarbons?
-
A
Oxygen
-
B
Nitrogen
-
C
Hydrogen
-
D
Sulfur
16
What is the term for compounds that have the same molecular formula but different structural arrangements?
-
A
Isotopes
-
B
Isomers
-
C
Allotropes
-
D
Polymers
17
Which functional group is present in aldehydes?
-
A
-OH
-
B
-COOH
-
C
-CHO
-
D
-NH2
18
What process turns liquid vegetable oils into solid fats by adding hydrogen?
-
A
Hydrogenation
-
B
Oxidation
-
C
Combustion
-
D
Esterification
19
What is the total number of valence electrons in a neutral carbon atom?
20
Which organic family contains the functional group -NH2?
-
A
Amines
-
B
Amides
-
C
Esters
-
D
Ethers
21
What type of reaction occurs when an acid reacts with an alcohol to form an ester?
-
A
Neutralization
-
B
Esterification
-
C
Cracking
-
D
Substitution
22
Which of the following is a saturated hydrocarbon?
-
A
Ethene
-
B
Ethyne
-
C
Propane
-
D
Benzene
23
What property refers to the resistance of a liquid to flow?
-
A
Volatility
-
B
Viscosity
-
C
Solubility
-
D
Density
24
Which group of organic compounds is commonly used as solvents and perfumes due to their pleasant scents?
-
A
Esters
-
B
Alkanes
-
C
Acids
-
D
Amines
25
What is the IUPAC name of the molecule CH3CH2OH?
-
A
Methanol
-
B
Ethanol
-
C
Propanol
-
D
Butanol
