Question 1

Which of the following represents an internal alkyne?

Accepted Answer

A) Only I and II 
B) Only I and III 
C) Only II and IV 
D) Only II and III 
A) Only I and II 
B) Only I and III 
C) Only II and IV 
D) Only II and III

Question 2

Which of the following explains why 1-pentyne has a slightly higher boiling point than 1-pentene?

Accepted Answer

A) 1-Pentyne has more carbons than 1-pentene. 
B) 1-Pentyne has more carbons per hydrogen than 1-pentene. 
C) 1-Pentyne is linear while 1-pentene is trigonal planar. 
D) The C-C triple bond in 1-pentyne is more polar than the C-C double bond in 1-pentene. 
A) 1-Pentyne has more carbons than 1-pentene. 
B) 1-Pentyne has more carbons per hydrogen than 1-pentene. 
C) 1-Pentyne is linear while 1-pentene is trigonal planar. 
D) The C-C triple bond in 1-pentyne is more polar than the C-C double bond in 1-pentene.

Question 3

Which of the following compounds can be an enol tautomer of 1,3-cyclohexandione?

Accepted Answer

A) Only I and II 
B) Only I and III 
C) Only II and III 
D) I, II, and III 
A) Only I and II 
B) Only I and III 
C) Only II and III 
D) I, II, and III

Question 4

Give the IUPAC name for the following compound.

Accepted Answer

A) trans-2-Acetylenecyclohexanol 
B) trans-2-Ethynylcyclohexanol 
C) trans-2-Acetylene-1-cyclohexanol 
D) trans-2-Ethylenecyclohexanol 
A) trans-2-Acetylenecyclohexanol 
B) trans-2-Ethynylcyclohexanol 
C) trans-2-Acetylene-1-cyclohexanol 
D) trans-2-Ethylenecyclohexanol

Question 5

What is the major organic product of the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 6

What is the major organic product of the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 7

Which of the following compounds is a tautomer of 2-hexanone?

Accepted Answer

A) Only I and II 
B) Only I and III 
C) Only II and III 
D) I, II, and III 
A) Only I and II 
B) Only I and III 
C) Only II and III 
D) I, II, and III

Question 8

Give the IUPAC name for the following compound.

Accepted Answer

A) 4,4-Diethyl-1-octyne 
B) 4,4-Dipropyl-1-heptyne 
C) 4,4-Dipropyl-6-heptyne 
D) 4,4-Diethyl-6-octyne 
A) 4,4-Diethyl-1-octyne 
B) 4,4-Dipropyl-1-heptyne 
C) 4,4-Dipropyl-6-heptyne 
D) 4,4-Diethyl-6-octyne

Question 9

Give the IUPAC name for the following compound.

Accepted Answer

A) 2,5-Dimethyl-3-heptyne 
B) 3,6-Dimethy-4-heptyne 
C) 2,5-Dimethyl-3-octyne 
D) 3,6-Dimethyl-4-octyne 
A) 2,5-Dimethyl-3-heptyne 
B) 3,6-Dimethy-4-heptyne 
C) 2,5-Dimethyl-3-octyne 
D) 3,6-Dimethyl-4-octyne

Question 10

Give the IUPAC name for the following compound.

Accepted Answer

A) 4-Methyl-4-penten-1-yne 
B) 2-Methyl-2-hexen-5-yne 
C) 5-Methyl-4-hexen-1-yne 
D) 2-Methyl-2-penten-4-yne 
A) 4-Methyl-4-penten-1-yne 
B) 2-Methyl-2-hexen-5-yne 
C) 5-Methyl-4-hexen-1-yne 
D) 2-Methyl-2-penten-4-yne

Question 11

How many s bonds and p bonds are present in a triple bond?

Accepted Answer

A) One s bond and one p bond. 
B) One s bond and two p bonds. 
C) Two s bonds and one p bond. 
D) Two s bonds and two p bonds. 
A) One s bond and one p bond. 
B) One s bond and two p bonds. 
C) Two s bonds and one p bond. 
D) Two s bonds and two p bonds.

Question 12

Give the IUPAC name for the following compound.

Accepted Answer

A) 4-Chloro-4-methyl-2-heptyne 
B) 3-Chloro-3-methyl-4-heptyne 
C) 3-Chloro-3-methyl-4-hexyne 
D) 4-Chloro-4-methyl-2-hexyne 
A) 4-Chloro-4-methyl-2-heptyne 
B) 3-Chloro-3-methyl-4-heptyne 
C) 3-Chloro-3-methyl-4-hexyne 
D) 4-Chloro-4-methyl-2-hexyne

Question 13

How many degrees of unsaturation are introduced by a triple bond?

Accepted Answer

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

Question 14

What is (are) the product(s) of the following reaction?

Accepted Answer

A) Only I 
B) Only II 
C) Only III 
D) I, II, and III 
A) Only I 
B) Only II 
C) Only III 
D) I, II, and III

Question 15

What is the starting material in the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 16

Which of the following about the physical properties of alkynes is not true?

Accepted Answer

A) Alkynes have low melting and boiling points. 
B) Melting and boiling points increase as the number of carbons increases. 
C) Alkynes are soluble in organic solvents. 
D) Alkynes are soluble in water. 
A) Alkynes have low melting and boiling points. 
B) Melting and boiling points increase as the number of carbons increases. 
C) Alkynes are soluble in organic solvents. 
D) Alkynes are soluble in water.

Question 17

What is the product of the following sequence of reactions?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 18

What is the product of the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 19

Give the IUPAC name for the following compound.

Accepted Answer

A) 3-sec-Butyl-1,4-octadiyne 
B) 3-Isopropyl-1,5-octadiyne 
C) 3-Isopropyl-1,5-nonadiyne 
D) 3-sec-Butyl-1,4-nonadiyne 
A) 3-sec-Butyl-1,4-octadiyne 
B) 3-Isopropyl-1,5-octadiyne 
C) 3-Isopropyl-1,5-nonadiyne 
D) 3-sec-Butyl-1,4-nonadiyne

Question 20

What is the major product of the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Exam 11: Alkynes

Which of the following represents an internal alkyne?

Which of the following explains why 1-pentyne has a slightly higher boiling point than 1-pentene?

Which of the following compounds can be an enol tautomer of 1,3-cyclohexandione?

Give the IUPAC name for the following compound.

What is the major organic product of the following reaction?

What is the major organic product of the following reaction?

Which of the following compounds is a tautomer of 2-hexanone?

Give the IUPAC name for the following compound.

Give the IUPAC name for the following compound.

Give the IUPAC name for the following compound.

How many s bonds and p bonds are present in a triple bond?

Give the IUPAC name for the following compound.

How many degrees of unsaturation are introduced by a triple bond?

What is (are) the product(s) of the following reaction?

What is the starting material in the following reaction?

Which of the following about the physical properties of alkynes is not true?

What is the product of the following sequence of reactions?

What is the product of the following reaction?

Give the IUPAC name for the following compound.

What is the major product of the following reaction?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers, and Related Compounds

Alkenes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry;

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

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