Question 1

What is the IUPAC name of the following compound?

Accepted Answer

(Z)-5-meth

Question 2

Which of the following is a terpene?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 3

"X" is a naturally occurring unsaturated hydrocarbon with the molecular formula C10H16. It is a monoterpene and is one of the components of bayberry wax. Identify "X", and find its index of hydrogen deficiency.

Accepted Answer

A)  X is myrcene, and the index of hydrogen deficiency is 2. 
B)  X is geraniol, and the index of hydrogen deficiency is 2. 
C)  X is myrcene, and the index of hydrogen deficiency is 3. 
D)  X is geraniol, and the index of hydrogen deficiency is 3. 
A)  X is myrcene, and the index of hydrogen deficiency is 2. 
B)  X is geraniol, and the index of hydrogen deficiency is 2. 
C)  X is myrcene, and the index of hydrogen deficiency is 3. 
D)  X is geraniol, and the index of hydrogen deficiency is 3.

Question 4

Which is the correct assignment of the common names of the following compounds?

Accepted Answer

A)  1 = ethylene; 2 = isobutylene; 3 = isoprene 
B)  1 = acetylene; 2 = isoprene; 3 = isobutylene 
C)  1 = ethylene; 2 = isoprene; 3 = isobutylene 
D)  1 = acetylene; 2 = isobutylene; 3 = isoprene 
A)  1 = ethylene; 2 = isobutylene; 3 = isoprene 
B)  1 = acetylene; 2 = isoprene; 3 = isobutylene 
C)  1 = ethylene; 2 = isoprene; 3 = isobutylene 
D)  1 = acetylene; 2 = isobutylene; 3 = isoprene

Question 5

What type of molecular orbital is formed by the overlap of atomic orbitals shown?

Accepted Answer

A)  σ bonding 
B)  σ antibonding 
C)  π bonding 
D)  π antibonding 
A)  σ bonding 
B)  σ antibonding 
C)  π bonding 
D)  π antibonding

Question 6

The decreasing order of melting points of the following alkenes is _____. ​

Accepted Answer

A) I>II>III>IV B) IIII>II>III A) I>II>III>IV B) IIII>II>III

Question 7

Which of the following compounds is most reactive (least stable)?

Accepted Answer

A)  (Z)-cycloheptene 
B)  (
E) -cycloheptene 
C)  (Z)-cyclooctene 
D)  (
E) -cyclooctene 
A)  (Z)-cycloheptene 
B)  (
E) -cycloheptene 
C)  (Z)-cyclooctene 
D)  (
E) -cyclooctene

Question 8

What is the approximate value of the H−C−H bonds angle in ethene?

Accepted Answer

A)  90° 
B)  109° 
C)  120° 
D)  180° 
A)  90° 
B)  109° 
C)  120° 
D)  180°

Question 9

Which of the following is not true regarding alkenes?

Accepted Answer

A)  Alkenes are non polar. 
B)  Alkenes burn in air to give H2O and CO2. 
C)  Alkenes are highly miscible with water. 
D)  The strongest intermolecular force between alkene molecules is the van der Waals interaction. 
A)  Alkenes are non polar. 
B)  Alkenes burn in air to give H2O and CO2. 
C)  Alkenes are highly miscible with water. 
D)  The strongest intermolecular force between alkene molecules is the van der Waals interaction.

Question 10

What is the IUPAC name of the following compound?

Accepted Answer

A)  1,3-dimethylhexene 
B)  2,4-dimethyl-2-hexene 
C)  2,4-dimethyl-1-hexene 
D)  3,5-dimethyl-4-hexene 
A)  1,3-dimethylhexene 
B)  2,4-dimethyl-2-hexene 
C)  2,4-dimethyl-1-hexene 
D)  3,5-dimethyl-4-hexene

Question 11

In the calculation of the index of hydrogen deficiency, when the elements of Group 6 are found in a formula no correction to the number of hydrogen atoms is needed.

Accepted Answer

A) True 
 B)False

Question 12

What types of units make up terpenes?

Accepted Answer

A)  isoprene 
B)  propene 
C)  vitamin A 
D)  pentadiene 
A)  isoprene 
B)  propene 
C)  vitamin A 
D)  pentadiene

Question 13

What is the name of the following compound?

Accepted Answer

A)  cis-4-methyl-1-allylcyclohexane 
B)  cis-4-allyl-1-methylcyclohexane 
C)  trans-4-allyl-1-methylcyclohexane 
D)  cis-4-methyl-1-vinylcyclohexane 
A)  cis-4-methyl-1-allylcyclohexane 
B)  cis-4-allyl-1-methylcyclohexane 
C)  trans-4-allyl-1-methylcyclohexane 
D)  cis-4-methyl-1-vinylcyclohexane

Question 14

How many isomers of 1,3-heptadiene exist?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 15

What is the IUPAC name of the following compound?

Accepted Answer

A)  (Z)-3-ethyl-5-methyl-1,4-heptadiene 
B)  (
E) -3-ethyl-5-methyl-1,4-heptadiene 
C)  (
E) -3-methyl-5-vinyl-3-heptene 
D)  (Z)-1,3-diethyl-1-methyl-1,4-pentadiene 
A)  (Z)-3-ethyl-5-methyl-1,4-heptadiene 
B)  (
E) -3-ethyl-5-methyl-1,4-heptadiene 
C)  (
E) -3-methyl-5-vinyl-3-heptene 
D)  (Z)-1,3-diethyl-1-methyl-1,4-pentadiene

Question 16

How many alkenes have the formula C5H10?

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  7 
A)  4 
B)  5 
C)  6 
D)  7

Question 17

How many isomers of 1,3,5-heptatriene exist?

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  8 
A)  1 
B)  2 
C)  4 
D)  8

Question 18

What is the index of hydrogen deficiency of a compound with a molecular formula of C6H15N?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
A)  0 
B)  1 
C)  2 
D)  3

Question 19

What type of molecular orbital is formed by the overlap of atomic orbitals shown?

Accepted Answer

A)  σ bonding 
B)  σ antibonding 
C)  π bonding 
D)  π antibonding 
A)  σ bonding 
B)  σ antibonding 
C)  π bonding 
D)  π antibonding

Question 20

What is the approximate value of the C−C−C bond angle in propene?

Accepted Answer

A)  90° 
B)  109° 
C)  120° 
D)  180° 
A)  90° 
B)  109° 
C)  120° 
D)  180°

Exam 5: Alkenes: Bonding, Nomenclature, and Properties

What is the IUPAC name of the following compound?

Which of the following is a terpene?

"X" is a naturally occurring unsaturated hydrocarbon with the molecular formula C10H16. It is a monoterpene and is one of the components of bayberry wax. Identify "X", and find its index of hydrogen deficiency.

Which is the correct assignment of the common names of the following compounds?

What type of molecular orbital is formed by the overlap of atomic orbitals shown?

The decreasing order of melting points of the following alkenes is _____. ​

Which of the following compounds is most reactive (least stable)?

What is the approximate value of the H−C−H bonds angle in ethene?

Which of the following is not true regarding alkenes?

What is the IUPAC name of the following compound?

In the calculation of the index of hydrogen deficiency, when the elements of Group 6 are found in a formula no correction to the number of hydrogen atoms is needed.

What types of units make up terpenes?

What is the name of the following compound?

How many isomers of 1,3-heptadiene exist?

What is the IUPAC name of the following compound?

How many alkenes have the formula C5H10?

How many isomers of 1,3,5-heptatriene exist?

What is the index of hydrogen deficiency of a compound with a molecular formula of C6H15N?

What type of molecular orbital is formed by the overlap of atomic orbitals shown?

What is the approximate value of the C−C−C bond angle in propene?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

"X" is a naturally occurring unsaturated hydrocarbon with the molecular formula C₁₀H₁₆. It is a monoterpene and is one of the components of bayberry wax. Identify "X", and find its index of hydrogen deficiency.

The decreasing order of melting points of the following alkenes is _____.

How many alkenes have the formula C₅H₁₀?

What is the index of hydrogen deficiency of a compound with a molecular formula of C₆H₁₅N?