Question 1

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

Accepted Answer

A)   1
B)   2
C)   4
D)   8E) C) and D)
F) A) and B)

Question 2

How many alkenes have the formula C5H10?

Accepted Answer

A)   4
B)   5
C)   6
D)   7E) B) and C)
F) A) and D)

Question 3

Which of the following is a terpene?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) A) and B)
F) B) and D)

Question 4

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 antibondingE) B) and D)
F) A) and D)

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 antibondingE) A) and D)
F) C) and D)

Question 6

How many isomers of 1,3-heptadiene exist?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) A) and C)
F) A) and D)

Question 7

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

Accepted Answer

A) I>II>III>IV B) IIII>II>IIIE) None of the above F) B) and C)

Question 8

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-hexeneE) C) and D)
F) A) and D)

Question 9

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 = isopreneE) C) and D)
F) A) and C)

Question 10

"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.E) All of the above
F) B) and C)

Question 11

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-vinylcyclohexaneE) None of the above
F) A) and C)

Question 12

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 13

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)   3E) B) and C)
F) A) and C)

Question 14

What types of units make up terpenes?

Accepted Answer

A)   isoprene
B)   propene
C)   vitamin A
D)   pentadieneE) B) and C)
F) A) and D)

Question 15

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

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°E) A) and C)
F) A) and B)

Question 16

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-pentadieneE) A) and B)
F) B) and D)

Question 17

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

Accepted Answer

A)   (Z) -cycloheptene
B)   (
E)  -cycloheptene
C)   (Z) -cyclooctene
D)   (
E)  -cycloocteneE) A) and B)
F) B) and D)

Question 18

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.E) B) and D)
F) B) and C)

Question 19

What is the IUPAC name of the following compound?

Accepted Answer

(Z)-5-meth...

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°E) B) and C)
F) A) and B)

Exam 5: Alkenes: Bonding, Nomenclature, and Properties

What is the IUPAC name of the following compound?

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

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What types of units make up terpenes?

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What is the IUPAC name of the following compound?

Correct Answerverified(Z)-5-meth...View AnswerShow Answer

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

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What is the IUPAC name of the following compound?

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How many isomers of 1,3-heptadiene exist?

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"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.

Correct AnswerverifiedShow Answer

Which of the following is not true regarding alkenes?

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

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

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Which of the following is a terpene?

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

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

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

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

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What is the name of the following compound?

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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.

Correct AnswerverifiedShow Answer

How many alkenes have the formula C5H10?

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(Z)-5-meth...
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"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.

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

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

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How many alkenes have the formula C₅H₁₀?

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