Question 1

Rank the following alkanes in order of increasing boiling point.

Accepted Answer

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

Question 2

Select the most stable conformer of cis-1,3-cyclohexanediol. .

Accepted Answer

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

Question 3

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 4

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 5

What is the IUPAC name of the following compound?

Accepted Answer

A) Pentane 
B) 2-Methylpentane 
C) 2-Methyl-3-ethylpentane 
D) 3-Ethyl-2-methylpentane 
A) Pentane 
B) 2-Methylpentane 
C) 2-Methyl-3-ethylpentane 
D) 3-Ethyl-2-methylpentane

Question 6

Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?

Accepted Answer

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

Question 7

Which formula represents a cycloalkane with 6 carbons?

Accepted Answer

A) C6H12 
B) C6H14 
C) C6H16 
D) C6H18 
A) C6H12 
B) C6H14 
C) C6H16 
D) C6H18

Question 8

What is the IUPAC name for the following compound?

Accepted Answer

A) 5-Ethyl-3,6-dimethylheptane 
B) 3-Ethyl-2,5-dimethylheptane 
C) 3-Ethyl-2,5-dimethyloctane 
D) 5-Ethyl-3,6-dimethyloctane 
A) 5-Ethyl-3,6-dimethylheptane 
B) 3-Ethyl-2,5-dimethylheptane 
C) 3-Ethyl-2,5-dimethyloctane 
D) 5-Ethyl-3,6-dimethyloctane

Question 9

What is the alternate chair conformation of the following compound?

Accepted Answer

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

Question 10

Which of the following is not a conformer of butane?

Accepted Answer

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

Question 11

What is the IUPAC name for the following compound?

Accepted Answer

A) 3-Ethyl-2,7-dimethyl-5-sec-butyldecane 
B) 5-sec-Butyl-3-ethyl-2,7-dimethyldecane 
C) 2,7-Dimethyl-3-ethyl-5-sec-butyldecane 
D) 3-Ethyl-2,7-dimethyl-5-isobutyldecane 
A) 3-Ethyl-2,7-dimethyl-5-sec-butyldecane 
B) 5-sec-Butyl-3-ethyl-2,7-dimethyldecane 
C) 2,7-Dimethyl-3-ethyl-5-sec-butyldecane 
D) 3-Ethyl-2,7-dimethyl-5-isobutyldecane

Question 12

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 13

What is the parent chain for the following compound?

Accepted Answer

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

Question 14

Which of the following compounds has only primary,secondary,and tertiary 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 15

Which of the following statements about the conformations of acyclic alkanes is true?

Accepted Answer

A) A staggered conformation with two larger groups 180° from each other is called gauche. 
B) Staggered conformations are at energy maxima and eclipsed conformations are energy minima. 
C) A staggered conformation with two larger groups 60° from each other is called anti. 
D) Gauche conformations are generally higher in energy than anti conformations. 
A) A staggered conformation with two larger groups 180° from each other is called gauche. 
B) Staggered conformations are at energy maxima and eclipsed conformations are energy minima. 
C) A staggered conformation with two larger groups 60° from each other is called anti. 
D) Gauche conformations are generally higher in energy than anti conformations.

Question 16

Which of the following compounds has only primary,secondary,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 17

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 18

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 19

What is the IUPAC name for the following alkane?

Accepted Answer

A) 3-isopropyl-6-methyloctane 
B) 3-isopropyl-3.7-methyloctane 
C) 3-ethyl-2,6-dimethyloctane 
D) 6-ethyl-3,7-dimethyloctane 
A) 3-isopropyl-6-methyloctane 
B) 3-isopropyl-3.7-methyloctane 
C) 3-ethyl-2,6-dimethyloctane 
D) 6-ethyl-3,7-dimethyloctane

Question 20

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

Exam 4: Alkanes

Rank the following alkanes in order of increasing boiling point.

Select the most stable conformer of cis-1,3-cyclohexanediol. .

Which of the following are anti conformers?

Which of the following conformation is highest in energy?

What is the IUPAC name of the following compound?

Which of the following chair conformations represents trans-1,4-dimethylcyclohexane?

Which formula represents a cycloalkane with 6 carbons?

What is the IUPAC name for the following compound?

What is the alternate chair conformation of the following compound?

Which of the following is not a conformer of butane?

What is the IUPAC name for the following compound?

What is the common name of the following alkyl group?

What is the parent chain for the following compound?

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

Which of the following statements about the conformations of acyclic alkanes is true?

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

What is the parent chain for the following compound?

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

What is the IUPAC name for the following alkane?

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

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 and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

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