Question 1

Which of the following is the correct definition for a pair of enantiomers?

Accepted Answer

A)  A pair of stereoisomers that have a plane of symmetry. 
B)  A pair of stereoisomers that are not mirror images of each other. 
C)  A pair of stereoisomers that are not superimposable mirror images of each other. 
D)  A pair of stereoisomers that are superimposable mirror images of each other. 
A)  A pair of stereoisomers that have a plane of symmetry. 
B)  A pair of stereoisomers that are not mirror images of each other. 
C)  A pair of stereoisomers that are not superimposable mirror images of each other. 
D)  A pair of stereoisomers that are superimposable mirror images of each other.

Question 2

How many stereogenic centers are present in the following compound?

Accepted Answer

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

Question 3

Which of the following cyclic molecules is a meso compound?

Accepted Answer

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

Question 4

Which of the following compounds has a plane of symmetry?

Accepted Answer

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

Question 5

How many isomers can be drawn (constitutional and stereoisomers) for dimethycyclopropane?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  6 
A)  2 
B)  3 
C)  4 
D)  6

Question 6

Which of the following statements about stereoisomers is not true?

Accepted Answer

A)  Stereoisomers have identical IUPAC names except for a prefix like cis or trans. 
B)  Stereoisomers differ in configuration. 
C)  Stereoisomers always have the same functional groups. 
D)  Stereoisomers differ only in their structural formula. 
A)  Stereoisomers have identical IUPAC names except for a prefix like cis or trans. 
B)  Stereoisomers differ in configuration. 
C)  Stereoisomers always have the same functional groups. 
D)  Stereoisomers differ only in their structural formula.

Question 7

Which of the following is the definition of chirality?

Accepted Answer

A)  The existence of a molecule with a mirror image. 
B)  The existence of a molecule with a carbon atom that has four different substituents. 
C)  The existence of a molecule that is superimposable on its mirror image. 
D)  The existence of a molecule that is not superimposable on its mirror image. 
A)  The existence of a molecule with a mirror image. 
B)  The existence of a molecule with a carbon atom that has four different substituents. 
C)  The existence of a molecule that is superimposable on its mirror image. 
D)  The existence of a molecule that is not superimposable on its mirror image.

Question 8

Which of the following molecules are chiral? I. cis-1,3-Dibromocyclohexane
II) 1-Bromo-1-methylcyclohexane
III) trans-1-Bromo-3-methylcyclohexane
IV) cis-1-Bromo-3-methylcyclohexane

Accepted Answer

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

Which of the following is the correct definition for a pair of enantiomers?

How many stereogenic centers are present in the following compound?

Which of the following cyclic molecules is a meso compound?

Which of the following compounds has a plane of symmetry?

How many isomers can be drawn (constitutional and stereoisomers) for dimethycyclopropane?

Which of the following statements about stereoisomers is not true?

Which of the following is the definition of chirality?

Which of the following molecules are chiral? I. cis-1,3-Dibromocyclohexane II) 1-Bromo-1-methylcyclohexane III) trans-1-Bromo-3-methylcyclohexane IV) cis-1-Bromo-3-methylcyclohexane

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers and Epoxides

Alkenes

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Electrophilic Aromatic Substitution

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

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

Lipids

Synthetic Polymers

Filters

Exam 5: Stereochemistry

Which of the following is the correct definition for a pair of enantiomers?

How many stereogenic centers are present in the following compound?

Which of the following cyclic molecules is a meso compound?

Which of the following compounds has a plane of symmetry?

How many isomers can be drawn (constitutional and stereoisomers) for dimethycyclopropane?

Which of the following statements about stereoisomers is not true?

Which of the following is the definition of chirality?

Which of the following molecules are chiral? I. cis-1,3-Dibromocyclohexane II) 1-Bromo-1-methylcyclohexane III) trans-1-Bromo-3-methylcyclohexane IV) cis-1-Bromo-3-methylcyclohexane

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers and Epoxides

Alkenes

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Electrophilic Aromatic Substitution

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

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

Lipids

Synthetic Polymers

Filters