,CHEM 104 Module 5 Exam | Q&A | 2026/2027 | General Chemistry II |
Portage Learning
1. An organic compound that contains only carbon and hydrogen is called
a(n):
A) Carbohydrate
B) Hydrocarbon
C) Alcohol
D) Aldehyde
Correct Answer: Hydrocarbon
Rationale: A hydrocarbon is an organic compound that contains only carbon
and hydrogen atoms. Carbohydrates contain oxygen, alcohols contain an -OH
group, and aldehydes contain a -CHO group.
2. Hydrocarbons can be classified as either aromatic or:
A) Aliphatic
B) Alkaline
C) Acidic
D) Amphoteric
Correct Answer: Aliphatic
Rationale: Hydrocarbons can be either aromatic (containing a benzene ring)
or aliphatic (having a carbon skeletal structure without a benzene ring).
Aliphatic hydrocarbons include alkanes, alkenes, and alkynes.
3. How many types of aliphatic hydrocarbons are there?
A) One
,B) Two
C) Three
D) Four
Correct Answer: Three
Rationale: There are three types of aliphatic hydrocarbons: alkanes, alkenes,
and alkynes. They are distinguished by the types of carbon-carbon bonds
present.
4. A hydrocarbon containing only single covalent bonds is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Alkane
Rationale: Alkanes are hydrocarbons containing only single covalent bonds
between carbon atoms. They are saturated hydrocarbons with the general
formula CₙH₂ₙ₊₂.
5. A hydrocarbon containing one or more carbon-carbon double bonds is
called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
, Correct Answer: Alkene
Rationale: Alkenes are hydrocarbons with one or more carbon-carbon double
bonds. They are unsaturated hydrocarbons with the general formula CₙH₂ₙ.
6. A hydrocarbon containing a carbon-carbon triple bond is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Alkyne
Rationale: Alkynes are hydrocarbons with a carbon-carbon triple bond. They
are unsaturated hydrocarbons with the general formula CₙH₂ₙ₋₂.
7. A hydrocarbon containing a benzene ring is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Aromatic hydrocarbon
Rationale: Aromatic hydrocarbons contain a benzene ring, which is a six-
carbon ring with alternating double bonds. The benzene ring provides
stability through resonance.
Portage Learning
1. An organic compound that contains only carbon and hydrogen is called
a(n):
A) Carbohydrate
B) Hydrocarbon
C) Alcohol
D) Aldehyde
Correct Answer: Hydrocarbon
Rationale: A hydrocarbon is an organic compound that contains only carbon
and hydrogen atoms. Carbohydrates contain oxygen, alcohols contain an -OH
group, and aldehydes contain a -CHO group.
2. Hydrocarbons can be classified as either aromatic or:
A) Aliphatic
B) Alkaline
C) Acidic
D) Amphoteric
Correct Answer: Aliphatic
Rationale: Hydrocarbons can be either aromatic (containing a benzene ring)
or aliphatic (having a carbon skeletal structure without a benzene ring).
Aliphatic hydrocarbons include alkanes, alkenes, and alkynes.
3. How many types of aliphatic hydrocarbons are there?
A) One
,B) Two
C) Three
D) Four
Correct Answer: Three
Rationale: There are three types of aliphatic hydrocarbons: alkanes, alkenes,
and alkynes. They are distinguished by the types of carbon-carbon bonds
present.
4. A hydrocarbon containing only single covalent bonds is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Alkane
Rationale: Alkanes are hydrocarbons containing only single covalent bonds
between carbon atoms. They are saturated hydrocarbons with the general
formula CₙH₂ₙ₊₂.
5. A hydrocarbon containing one or more carbon-carbon double bonds is
called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
, Correct Answer: Alkene
Rationale: Alkenes are hydrocarbons with one or more carbon-carbon double
bonds. They are unsaturated hydrocarbons with the general formula CₙH₂ₙ.
6. A hydrocarbon containing a carbon-carbon triple bond is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Alkyne
Rationale: Alkynes are hydrocarbons with a carbon-carbon triple bond. They
are unsaturated hydrocarbons with the general formula CₙH₂ₙ₋₂.
7. A hydrocarbon containing a benzene ring is called a(n):
A) Alkane
B) Alkene
C) Alkyne
D) Aromatic hydrocarbon
Correct Answer: Aromatic hydrocarbon
Rationale: Aromatic hydrocarbons contain a benzene ring, which is a six-
carbon ring with alternating double bonds. The benzene ring provides
stability through resonance.
