CHEM 104 Module 8 | General Chemistry II w/ Lab Exam
Q&A | Portage Learning
These are original practice questions written for study. They are not official CHEM
104, Portage Learning, or university exam questions and are not copied from any
copyrighted question bank. They cover common CHEM 104 Module 8 | Organic
Chemistry and Biochemistry topics: hydrocarbons, functional groups, isomers,
reactions, biomolecules, polymers, and clinical applications.
Question 1:
Organic chemistry is primarily the study of compounds containing which element?
A. Oxygen
B. Carbon
C. Nitrogen
D. Sulfur
Correct answer: B
Rationale: Organic chemistry focuses on carbon-containing compounds.
Question 2:
How many covalent bonds can a neutral carbon atom form?
A. 2
B. 3
C. 4
D. 6
Correct answer: C
Rationale: Carbon has four valence electrons and typically forms four covalent bonds.
Question 3:
A hydrocarbon contains only:
A. Carbon and oxygen
B. Carbon and hydrogen
C. Hydrogen and oxygen
D. Carbon, hydrogen, and nitrogen
Correct answer: B
Rationale: Hydrocarbons are composed only of carbon and hydrogen.
,Question 4:
A saturated hydrocarbon contains:
A. Only single bonds
B. At least one double bond
C. At least one triple bond
D. A benzene ring
Correct answer: A
Rationale: Saturated hydrocarbons have only single carbon-carbon bonds.
Question 5:
An unsaturated hydrocarbon contains:
A. Only single bonds
B. At least one multiple bond
C. No carbon atoms
D. Only hydrogen atoms
Correct answer: B
Rationale: Unsaturated hydrocarbons contain double or triple bonds.
Question 6:
The general formula for an alkane is:
A. CnH2n
B. CnH2n+2
C. CnH2n−2
D. CnHn
Correct answer: B
Rationale: Alkanes have the general formula CnH2n+2.
Question 7:
The general formula for an alkene is:
A. CnH2n+2
B. CnH2n
C. CnH2n−2
D. CnHn
Correct answer: B
Rationale: Alkenes contain one double bond and have the formula CnH2n.
, Question 8:
The general formula for an alkyne is:
A. CnH2n+2
B. CnH2n
C. CnH2n−2
D. CnHn
Correct answer: C
Rationale: Alkynes contain one triple bond and have the formula CnH2n−2.
Question 9:
Which compound is aromatic?
A. Methane
B. Ethene
C. Benzene
D. Ethyne
Correct answer: C
Rationale: Benzene is the classic aromatic compound.
Question 10:
A functional group is best described as:
A. A group of atoms that gives a molecule its characteristic chemical properties
B. A type of carbon skeleton
C. A hydrocarbon chain
D. A metal ion
Correct answer: A
Rationale: Functional groups determine reactivity and properties of organic molecules.
Question 11:
The molecular formula of methane is:
A. CH4
B. C2H6
C. C3H8
D. C4H10
Correct answer: A
Rationale: Methane is the simplest alkane, CH4.
Q&A | Portage Learning
These are original practice questions written for study. They are not official CHEM
104, Portage Learning, or university exam questions and are not copied from any
copyrighted question bank. They cover common CHEM 104 Module 8 | Organic
Chemistry and Biochemistry topics: hydrocarbons, functional groups, isomers,
reactions, biomolecules, polymers, and clinical applications.
Question 1:
Organic chemistry is primarily the study of compounds containing which element?
A. Oxygen
B. Carbon
C. Nitrogen
D. Sulfur
Correct answer: B
Rationale: Organic chemistry focuses on carbon-containing compounds.
Question 2:
How many covalent bonds can a neutral carbon atom form?
A. 2
B. 3
C. 4
D. 6
Correct answer: C
Rationale: Carbon has four valence electrons and typically forms four covalent bonds.
Question 3:
A hydrocarbon contains only:
A. Carbon and oxygen
B. Carbon and hydrogen
C. Hydrogen and oxygen
D. Carbon, hydrogen, and nitrogen
Correct answer: B
Rationale: Hydrocarbons are composed only of carbon and hydrogen.
,Question 4:
A saturated hydrocarbon contains:
A. Only single bonds
B. At least one double bond
C. At least one triple bond
D. A benzene ring
Correct answer: A
Rationale: Saturated hydrocarbons have only single carbon-carbon bonds.
Question 5:
An unsaturated hydrocarbon contains:
A. Only single bonds
B. At least one multiple bond
C. No carbon atoms
D. Only hydrogen atoms
Correct answer: B
Rationale: Unsaturated hydrocarbons contain double or triple bonds.
Question 6:
The general formula for an alkane is:
A. CnH2n
B. CnH2n+2
C. CnH2n−2
D. CnHn
Correct answer: B
Rationale: Alkanes have the general formula CnH2n+2.
Question 7:
The general formula for an alkene is:
A. CnH2n+2
B. CnH2n
C. CnH2n−2
D. CnHn
Correct answer: B
Rationale: Alkenes contain one double bond and have the formula CnH2n.
, Question 8:
The general formula for an alkyne is:
A. CnH2n+2
B. CnH2n
C. CnH2n−2
D. CnHn
Correct answer: C
Rationale: Alkynes contain one triple bond and have the formula CnH2n−2.
Question 9:
Which compound is aromatic?
A. Methane
B. Ethene
C. Benzene
D. Ethyne
Correct answer: C
Rationale: Benzene is the classic aromatic compound.
Question 10:
A functional group is best described as:
A. A group of atoms that gives a molecule its characteristic chemical properties
B. A type of carbon skeleton
C. A hydrocarbon chain
D. A metal ion
Correct answer: A
Rationale: Functional groups determine reactivity and properties of organic molecules.
Question 11:
The molecular formula of methane is:
A. CH4
B. C2H6
C. C3H8
D. C4H10
Correct answer: A
Rationale: Methane is the simplest alkane, CH4.
