Question 1

Which of the following is the characteristic feature of all alkynes?

Accepted Answer

A)  the presence of one or more carbon-carbon double bonds 
B)  the presence of one or more carbon-carbon triple bonds 
C)  the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond 
D)  the presence of a ring system 
A)  the presence of one or more carbon-carbon double bonds 
B)  the presence of one or more carbon-carbon triple bonds 
C)  the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond 
D)  the presence of a ring system

Question 2

What type of alcohol is formed by the hydration of 2-methyl-1-pentene?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol. 
A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol.

Question 3

Which class of compounds is not widespread in nature, and has little importance in biochemistry?

Accepted Answer

A)  alkanes 
B)  alkenes 
C)  alkynes 
D)  arenes 
A)  alkanes 
B)  alkenes 
C)  alkynes 
D)  arenes

Question 4

What product is obtained by the hydrobromination of 2-methyl-1-pentene?

Accepted Answer

A)  1-bromo-2-methylpentane 
B)  2-bromo-2-methylpentane 
C)  2,3-dibromo-2-methylpentane 
D)  3,3-dibromo-2-methylpentane 
A)  1-bromo-2-methylpentane 
B)  2-bromo-2-methylpentane 
C)  2,3-dibromo-2-methylpentane 
D)  3,3-dibromo-2-methylpentane

Question 5

In which of the following types of reactions is sulfuric acid used as a catalyst?

Accepted Answer

A)  halogenation 
B)  hydrohalogenation 
C)  hydrogenation 
D)  hydration 
A)  halogenation 
B)  hydrohalogenation 
C)  hydrogenation 
D)  hydration

Question 6

Which of the following reactions involves the addition of different groups to the two ends of a double bond?

Accepted Answer

A)  hydrogenation 
B)  hydrobromination 
C)  both a and b 
D)  neither a nor b 
A)  hydrogenation 
B)  hydrobromination 
C)  both a and b 
D)  neither a nor b

Question 7

Which of the following compounds, all of which have the molecular formula C6H12, does not have cis and trans isomers?

Accepted Answer

A)  4-methyl-2-pentene 
B)  2-methyl-1-pentene 
C)  3-methyl-2-pentene 
D)  None of them, they all have cis-trans isomers. 
A)  4-methyl-2-pentene 
B)  2-methyl-1-pentene 
C)  3-methyl-2-pentene 
D)  None of them, they all have cis-trans isomers.

Question 8

The formation of polyethylene is an example of which of the following?

Accepted Answer

A)  chain-growth polymerization 
B)  oxidative polymerization 
C)  step-growth polymerization 
D)  none of these 
A)  chain-growth polymerization 
B)  oxidative polymerization 
C)  step-growth polymerization 
D)  none of these

Question 9

Which of the following is true of the common names of low molecular weight alkenes and alkynes?

Accepted Answer

A)  The common names of all alkenes end in −ene, and those of alkynes end in −yne. 
B)  The common names of all alkenes and all alkynes end in −ene. 
C)  The common names of all alkenes and all alkynes end in −yne. 
D)  None of the above is correct. 
A)  The common names of all alkenes end in −ene, and those of alkynes end in −yne. 
B)  The common names of all alkenes and all alkynes end in −ene. 
C)  The common names of all alkenes and all alkynes end in −yne. 
D)  None of the above is correct.

Question 10

What type of alcohol is formed by the hydration of 1-pentene?

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol. 
A)  primary 
B)  secondary 
C)  tertiary 
D)  None of these, the product is not an alcohol.

Question 11

How many stereoisomers are possible for 2,4-heptadiene?

Accepted Answer

A)  2 
B)  4 
C)  7 
D)  8 
A)  2 
B)  4 
C)  7 
D)  8

Question 12

Four patterns can be noted for certain organic reactions;
Pattern 1: Add a proton.
Pattern 2: Take a proton away.
Pattern 3: Reaction between an electrophile and nucleophile to form a new covalent bond.
Pattern 4: Reaction of proton donor with a carbon to carbon double bond to from a new covalent bond.
-To which pattern does the following reaction belong?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 13

What is the correct IUPAC name for the following compound?

Accepted Answer

A)  2,2-dimethyl-4-pentene 
B)  4,4-dimethyl-2-pentene 
C)  4,4-dimethyl-1-pentene 
D)  isoheptene 
A)  2,2-dimethyl-4-pentene 
B)  4,4-dimethyl-2-pentene 
C)  4,4-dimethyl-1-pentene 
D)  isoheptene

Question 14

How many cycloalkenes have the molecular formula C5H8?

Accepted Answer

A)  7 
B)  8 
C)  9 
D)  10 
A)  7 
B)  8 
C)  9 
D)  10

Question 15

Which of the following is the characteristic feature of all alkenes?

Accepted Answer

A)  the presence of one or more carbon-carbon double bonds 
B)  the presence of one or more carbon-carbon triple bonds 
C)  the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond 
D)  the presence of a ring system 
A)  the presence of one or more carbon-carbon double bonds 
B)  the presence of one or more carbon-carbon triple bonds 
C)  the presence of at least one carbon-carbon double bond, and at least one carbon-carbon triple bond 
D)  the presence of a ring system

Question 16

How many stereoisomers are possible for 2,4,6-nonatriene?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
A)  2 
B)  4 
C)  8 
D)  16

Question 17

Which of the following is not a correct IUPAC name?

Accepted Answer

A)  3-methylcyclopentene 
B)  4-methylcyclopentene 
C)  5-methylcyclopentene 
D)  None, they are all correct. 
A)  3-methylcyclopentene 
B)  4-methylcyclopentene 
C)  5-methylcyclopentene 
D)  None, they are all correct.

Question 18

What is the product of the reaction of the substance given below with hydrogen?

Accepted Answer

A)  butyne 
B)  cis-butane 
C)  trans-butene 
D)  butane 
A)  butyne 
B)  cis-butane 
C)  trans-butene 
D)  butane

Question 19

Stereoisomers exist for which of the following molecules, all of which have the molecular formula C5H8?

Accepted Answer

A)  1,3-pentadiene 
B)  1,4-pentadiene 
C)  2-methyl-1,3-butadiene 
D)  all of them 
A)  1,3-pentadiene 
B)  1,4-pentadiene 
C)  2-methyl-1,3-butadiene 
D)  all of them

Question 20

Which of the following monomers can be used to prepare the polymer given below?

Accepted Answer

A)  trans-1-bromopropene 
B)  2-bromopropene 
C)  both a and b 
D)  neither a nor b 
A)  trans-1-bromopropene 
B)  2-bromopropene 
C)  both a and b 
D)  neither a nor b

Exam 12: Alkenes and Alkynes

Which of the following is the characteristic feature of all alkynes?

What type of alcohol is formed by the hydration of 2-methyl-1-pentene?

Which class of compounds is not widespread in nature, and has little importance in biochemistry?

What product is obtained by the hydrobromination of 2-methyl-1-pentene?

In which of the following types of reactions is sulfuric acid used as a catalyst?

Which of the following reactions involves the addition of different groups to the two ends of a double bond?

Which of the following compounds, all of which have the molecular formula C6H12, does not have cis and trans isomers?

The formation of polyethylene is an example of which of the following?

Which of the following is true of the common names of low molecular weight alkenes and alkynes?

What type of alcohol is formed by the hydration of 1-pentene?

How many stereoisomers are possible for 2,4-heptadiene?

What is the correct IUPAC name for the following compound?

How many cycloalkenes have the molecular formula C5H8?

Which of the following is the characteristic feature of all alkenes?

How many stereoisomers are possible for 2,4,6-nonatriene?

Which of the following is not a correct IUPAC name?

What is the product of the reaction of the substance given below with hydrogen?

Stereoisomers exist for which of the following molecules, all of which have the molecular formula C5H8?

Which of the following monomers can be used to prepare the polymer given below?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Which of the following compounds, all of which have the molecular formula C₆H₁₂, does not have cis and trans isomers?

How many cycloalkenes have the molecular formula C₅H₈?

Stereoisomers exist for which of the following molecules, all of which have the molecular formula C₅H₈?