Question 1

What is the IUPAC name for the following compound?

Accepted Answer

A) 1-Butylcyclohexane 
B) Cyclohexanebutane 
C) 1-Cyclohexylbutane 
D) Butylcyclohexane 
A) 1-Butylcyclohexane 
B) Cyclohexanebutane 
C) 1-Cyclohexylbutane 
D) Butylcyclohexane

Question 2

Which of the following is the highest energy conformer of 2,3-dimethylbutane?

Accepted Answer

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

Question 3

Which of the following compounds has only primary and secondary carbon atoms?

Accepted Answer

A) Pentane 
B) 2-Methylpentane 
C) 2,2-Dimethylpentane 
D) 2,3,3-Trimethylpentane 
A) Pentane 
B) 2-Methylpentane 
C) 2,2-Dimethylpentane 
D) 2,3,3-Trimethylpentane

Question 4

Which of the following cycloalkanes has the least angle strain?

Accepted Answer

A) Cyclopropane 
B) Cyclohexane 
C) Cyclopentane 
D) Cycloheptane 
A) Cyclopropane 
B) Cyclohexane 
C) Cyclopentane 
D) Cycloheptane

Question 5

What is the IUPAC name for the following compound?

Accepted Answer

A) 1-Butyl-3-methylcyclohexane 
B) 1-sec-Butyl-3-methylcyclohexane 
C) 1-Methyl-3-sec-butylcyclohexane 
D) 1-sec-Butyl-3-methylhexane 
A) 1-Butyl-3-methylcyclohexane 
B) 1-sec-Butyl-3-methylcyclohexane 
C) 1-Methyl-3-sec-butylcyclohexane 
D) 1-sec-Butyl-3-methylhexane

Question 6

Which of the following compounds has primary, secondary, tertiary, and quaternary carbon atoms?

Accepted Answer

A) Pentane 
B) 2-Methylpentane 
C) 2,2-Dimethylpentane 
D) 2,2,3-Trimethylpentane 
A) Pentane 
B) 2-Methylpentane 
C) 2,2-Dimethylpentane 
D) 2,2,3-Trimethylpentane

Question 7

What is the parent chain for the following compound?

Accepted Answer

A) Heptane 
B) Octane 
C) Nonane 
D) Decane 
A) Heptane 
B) Octane 
C) Nonane 
D) Decane

Question 8

Which of the following conformation is highest in energy?

Accepted Answer

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

Question 9

What is the common name of the following alkyl group?

Accepted Answer

A) Isopropyl 
B) Isobutyl 
C) sec-Butyl 
D) tert-Butyl 
A) Isopropyl 
B) Isobutyl 
C) sec-Butyl 
D) tert-Butyl

Question 10

What is the approximate C-C-C bond angle in propane?

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
A) 90° 
B) 109.5° 
C) 120° 
D) 180°

Question 11

How many cycloalkane constitutional isomers (excluding stereoisomers) are there with molecular formula C5H10?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 12

Which of the following are anti conformers?

Accepted Answer

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

Question 13

What is the IUPAC name for the following compound?

Accepted Answer

A) 2,3-Dimethyl-4-sec-butylheptane 
B) 4-sec-Butyl-2,3-dimethylheptane 
C) 3,5,6-Trimethyl-4-propylheptane 
D) 2,3,5-Trimethyl-4-propylheptane 
A) 2,3-Dimethyl-4-sec-butylheptane 
B) 4-sec-Butyl-2,3-dimethylheptane 
C) 3,5,6-Trimethyl-4-propylheptane 
D) 2,3,5-Trimethyl-4-propylheptane

Question 14

Rank the conformers of butane in order of decreasing stability, putting the most stable first.

Accepted Answer

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

Question 15

Which of the following is the most stable conformation of the following compound?

Accepted Answer

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

Question 16

What is the molecular formula of a cycloalkane that has six carbon atoms?

Accepted Answer

A) C6H14 
B) C6H10 
C) C6H12 
D) C6H16 
A) C6H14 
B) C6H10 
C) C6H12 
D) C6H16

Question 17

What is the IUPAC name for the following compound?

Accepted Answer

A) 4-Ethyl-5-methyloctane 
B) 4-Methyl-5-ethyloctane 
C) 4-Methyl-3-propylheptane 
D) 4-Methyl-5-propyloctane 
A) 4-Ethyl-5-methyloctane 
B) 4-Methyl-5-ethyloctane 
C) 4-Methyl-3-propylheptane 
D) 4-Methyl-5-propyloctane

Exam 4: Alkanes

What is the IUPAC name for the following compound?

Which of the following is the highest energy conformer of 2,3-dimethylbutane?

Which of the following compounds has only primary and secondary carbon atoms?

Which of the following cycloalkanes has the least angle strain?

What is the IUPAC name for the following compound?

Which of the following compounds has primary, secondary, tertiary, and quaternary carbon atoms?

What is the parent chain for the following compound?

Which of the following conformation is highest in energy?

What is the common name of the following alkyl group?

What is the approximate C-C-C bond angle in propane?

How many cycloalkane constitutional isomers (excluding stereoisomers) are there with molecular formula C5H10?

Which of the following are anti conformers?

What is the IUPAC name for the following compound?

Rank the conformers of butane in order of decreasing stability, putting the most stable first.

Which of the following is the most stable conformation of the following compound?

What is the molecular formula of a cycloalkane that has six carbon atoms?

What is the IUPAC name for the following compound?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers, and Related Compounds

Alkenes

Alkynes

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

Filters

How many cycloalkane constitutional isomers (excluding stereoisomers) are there with molecular formula C₅H₁₀?