Question 1

Which of the following compounds is obtained by the oxidation of hexanal?

Accepted Answer

A)  hexanol 
B)  2-hexanone 
C)  hexanoic acid 
D)  none of these 
A)  hexanol 
B)  2-hexanone 
C)  hexanoic acid 
D)  none of these

Question 2

What is produced by the reduction of pyruvate in the body under anaerobic conditions?

Accepted Answer

A)  acetate 
B)  acetyl CoA 
C)  lactate 
D)  pyruvate 
A)  acetate 
B)  acetyl CoA 
C)  lactate 
D)  pyruvate

Question 3

Which of the following is obtained from the reaction of 2-pentanone with NaBH4 followed by the addition of water?

Accepted Answer

A)  pentane 
B)  1-pentanol 
C)  2-pentanol 
D)  pentanoic acid 
A)  pentane 
B)  1-pentanol 
C)  2-pentanol 
D)  pentanoic acid

Question 4

Identify the IUPAC name of the given compound.

Accepted Answer

A)  2-methyl-3-amino-1-cyclopentanone 
B)  1-amino-2-methyl-3-cyclopentanone 
C)  3-amino-2-methyl-1-cyclopentanone 
D)  2-amino-1-methyl-2-cyclopentanone 
A)  2-methyl-3-amino-1-cyclopentanone 
B)  1-amino-2-methyl-3-cyclopentanone 
C)  3-amino-2-methyl-1-cyclopentanone 
D)  2-amino-1-methyl-2-cyclopentanone

Question 5

Which of the following is a correct IUPAC name?

Accepted Answer

A)  1-methylpropanal 
B)  2-methylpropanal 
C)  3-methylpropanal 
D)  none of these 
A)  1-methylpropanal 
B)  2-methylpropanal 
C)  3-methylpropanal 
D)  none of these

Question 6

What is the smallest number of carbon atoms that can be present in an aldehyde?

Accepted Answer

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

Question 7

Which of the following is a correct IUPAC name?

Accepted Answer

A)  1-methylpropanal 
B)  2-ethylpropanal 
C)  2,2-dimethylpropanal 
D)  none of these 
A)  1-methylpropanal 
B)  2-ethylpropanal 
C)  2,2-dimethylpropanal 
D)  none of these

Question 8

Answer the following question based on the given ball-and-stick models. Atoms other than carbon and hydrogen are labeled with the symbol of the element.   Which of the following is represented in this reaction?

Accepted Answer

A)  a pair of enantiomers 
B)  a pair of cis-trans isomers 
C)  the resonance structure of a compound 
D)  a pair of keto-enol tautomers 
E)  none of these 
A)  a pair of enantiomers 
B)  a pair of cis-trans isomers 
C)  the resonance structure of a compound 
D)  a pair of keto-enol tautomers 
E)  none of these

Question 9

What is the IUPAC name of the following compound?

Accepted Answer

A)  2,4-dimethyl-6-heptanone 
B)  4,6-dimethyl-2-heptanone 
C)  4,6-dimethylheptanone 
D)  2,4-dimethylhexanal 
A)  2,4-dimethyl-6-heptanone 
B)  4,6-dimethyl-2-heptanone 
C)  4,6-dimethylheptanone 
D)  2,4-dimethylhexanal

Question 10

In an aldehyde or a ketone, what is an α-carbon?

Accepted Answer

A)  the terminal carbon atom 
B)  the carbon atom of the carbonyl group 
C)  the carbon atom that is adjacent to the carbonyl group 
D)  none of these 
A)  the terminal carbon atom 
B)  the carbon atom of the carbonyl group 
C)  the carbon atom that is adjacent to the carbonyl group 
D)  none of these

Question 11

Which of the following compounds has the lowest boiling point?

Accepted Answer

A)  acetone 
B)  formaldehyde 
C)  3-octanone 
D)  cyclopentanone 
A)  acetone 
B)  formaldehyde 
C)  3-octanone 
D)  cyclopentanone

Question 12

Which of the following is true of ketones?

Accepted Answer

A)  Most ketones are odorless. 
B)  Most ketones have mild, fishy odors. 
C)  Most ketones have strong, pleasant odors. 
D)  Most ketones have strong, unpleasant odors. 
A)  Most ketones are odorless. 
B)  Most ketones have mild, fishy odors. 
C)  Most ketones have strong, pleasant odors. 
D)  Most ketones have strong, unpleasant odors.

Question 13

Which of the following is a characteristic of the given structure?

Accepted Answer

A)  It is an aromatic aldehyde. 
B)  It lacks α-hydrogens. 
C)  It can form an enol. 
D)  It cannot form a hemiacetal intermediate. 
E)  None of these are correct. 
A)  It is an aromatic aldehyde. 
B)  It lacks α-hydrogens. 
C)  It can form an enol. 
D)  It cannot form a hemiacetal intermediate. 
E)  None of these are correct.

Question 14

Which of the following will give a positive test with Tollens' reagent?

Accepted Answer

A)  aldehydes 
B)  ketones 
C)  aldehydes and ketones 
D)  none of these 
A)  aldehydes 
B)  ketones 
C)  aldehydes and ketones 
D)  none of these

Question 15

Which of the following compounds is the most soluble in water?

Accepted Answer

A)  2-butanone 
B)  1-hydroxy-2-butanone 
C)  butanal 
D)  2,3-dihydroxybutanal 
A)  2-butanone 
B)  1-hydroxy-2-butanone 
C)  butanal 
D)  2,3-dihydroxybutanal

Question 16

Answer the following question based on the given ball-and-stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element.   In order to convert the given compound to a hemiacetal, which of the following reagents should be used?

Accepted Answer

A)  H2/Pd 
B)  NaBH4 
C)  K2Cr2O7/H2SO4 
D)  AgNO3/NH3 
E)  CH3CH2OH 
A)  H2/Pd 
B)  NaBH4 
C)  K2Cr2O7/H2SO4 
D)  AgNO3/NH3 
E)  CH3CH2OH

Question 17

Which of the following is obtained from the reaction of 2-butanone with H2 in the presence of a transition metal catalyst?

Accepted Answer

A)  1-butene 
B)  2-butene 
C)  1-butanol 
D)  2-butanol 
A)  1-butene 
B)  2-butene 
C)  1-butanol 
D)  2-butanol

Question 18

What is the smallest number of carbon atoms that can be present in a ketone?

Accepted Answer

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

Question 19

Which of the following compounds is obtained from the reduction of butanal using NaBH4 followed by treatment with water?

Accepted Answer

A)  butene 
B)  1-butanol 
C)  2-butanol 
D)  butanoic acid 
A)  butene 
B)  1-butanol 
C)  2-butanol 
D)  butanoic acid

Question 20

Which of the following compounds is the most soluble in water?

Accepted Answer

A)  butanal 
B)  heptanal 
C)  hexanal 
D)  pentanal 
A)  butanal 
B)  heptanal 
C)  hexanal 
D)  pentanal

Exam 16: Aldehydes and Ketones

Which of the following compounds is obtained by the oxidation of hexanal?

What is produced by the reduction of pyruvate in the body under anaerobic conditions?

Which of the following is obtained from the reaction of 2-pentanone with NaBH4 followed by the addition of water?

Identify the IUPAC name of the given compound.

Which of the following is a correct IUPAC name?

What is the smallest number of carbon atoms that can be present in an aldehyde?

Which of the following is a correct IUPAC name?

Answer the following question based on the given ball-and-stick models. Atoms other than carbon and hydrogen are labeled with the symbol of the element. Which of the following is represented in this reaction?

What is the IUPAC name of the following compound?

In an aldehyde or a ketone, what is an α-carbon?

Which of the following compounds has the lowest boiling point?

Which of the following is true of ketones?

Which of the following is a characteristic of the given structure?

Which of the following will give a positive test with Tollens' reagent?

Which of the following compounds is the most soluble in water?

Answer the following question based on the given ball-and-stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element. In order to convert the given compound to a hemiacetal, which of the following reagents should be used?

Which of the following is obtained from the reaction of 2-butanone with H2 in the presence of a transition metal catalyst?

What is the smallest number of carbon atoms that can be present in a ketone?

Which of the following compounds is obtained from the reduction of butanal using NaBH4 followed by treatment with water?

Which of the following compounds is the most soluble in water?

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

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

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 is obtained from the reaction of 2-pentanone with NaBH₄ followed by the addition of water?

Which of the following is obtained from the reaction of 2-butanone with H₂ in the presence of a transition metal catalyst?

Which of the following compounds is obtained from the reduction of butanal using NaBH₄ followed by treatment with water?