Question 1

The compound decanal contributes to the odor and flavor of an orange.Which of the following statements about decanal is FALSE?

Accepted Answer

A) It is an aldehyde. 
B) It contains a saturated chain of ten carbons. 
C) It contains a carbonyl group on the first carbon of the carbon chain. 
D) It can form intermolecular hydrogen bonds with other molecules of decanal. 
E) It is insoluble in water. 
A) It is an aldehyde. 
B) It contains a saturated chain of ten carbons. 
C) It contains a carbonyl group on the first carbon of the carbon chain. 
D) It can form intermolecular hydrogen bonds with other molecules of decanal. 
E) It is insoluble in water.

Question 2

What class of compounds is represented by the general formula RCHO?

Accepted Answer

A) ketones 
B) carboxylic acids 
C) alkenes 
D) alcohols 
E) aldehydes 
A) ketones 
B) carboxylic acids 
C) alkenes 
D) alcohols 
E) aldehydes

Question 3

What type of compound is produced by the oxidation of an aldehyde?

Accepted Answer

A) carboxylic acid 
B) alcohol 
C) alkane 
D) hemiacetal 
E) acetone 
A) carboxylic acid 
B) alcohol 
C) alkane 
D) hemiacetal 
E) acetone

Question 4

Which of the statements concerning the compound shown below is FALSE?

Accepted Answer

A) Its name is cyclopentanone. 
B) Its molecular formula is C5H8O. 
C) Molecules of this compound are held together in a collection by dipole-dipole attractions. 
D) It may be formed by the oxidation of cyclopentanol. 
E) It can be oxidized to produce a carboxylic acid. 
A) Its name is cyclopentanone. 
B) Its molecular formula is C5H8O. 
C) Molecules of this compound are held together in a collection by dipole-dipole attractions. 
D) It may be formed by the oxidation of cyclopentanol. 
E) It can be oxidized to produce a carboxylic acid.

Question 5

What class of compounds is formed by oxidation of aldehydes?

Accepted Answer

A) enols 
B) carboxylic acids 
C) ketones 
D) acetals 
E) Aldehydes do not undergo oxidation. 
A) enols 
B) carboxylic acids 
C) ketones 
D) acetals 
E) Aldehydes do not undergo oxidation.

Question 6

Formaldehyde is used to kill viruses without damaging their genetic information.

Accepted Answer

A) True 
 B)False

Question 7

What is the IUPAC name of the compound shown?

Accepted Answer

A) formaldehyde 
B) acetone 
C) propanone 
D) propanal 
E) ethanal 
A) formaldehyde 
B) acetone 
C) propanone 
D) propanal 
E) ethanal

Question 8

A ketone will react with Tollens' reagent to produce a silver mirror, but an aldehyde will not.

Accepted Answer

A) True 
 B)False

Question 9

What alcohol undergoes oxidation to produce acetic acid?

Accepted Answer

A) methanol 
B) ethanol 
C) propanol 
D) isopropyl alcohol 
E) acetone 
A) methanol 
B) ethanol 
C) propanol 
D) isopropyl alcohol 
E) acetone

Question 10

Which of the following compounds would be expected to react similarly in a chemical reaction?

Accepted Answer

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

Question 11

What is the common name of the simplest aldehyde?

Accepted Answer

A) acetal 
B) methal 
C) acetaldehyde 
D) formaldehyde 
E) formal 
A) acetal 
B) methal 
C) acetaldehyde 
D) formaldehyde 
E) formal

Question 12

The compound shown below is the enol form of butanal.

Accepted Answer

A) True 
 B)False

Question 13

Propylene glycol, shown below, is a nontoxic diol used as a solvent for pharmaceutical drugs, and as a moisturizing agent for foods.When ingested, both alcohol functional groups are oxidized by enzymes in the liver to produce pyruvic acid, a compound with the formula C3H4O3.What is the structure of pyruvic acid?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 14

Which structure/name combination is incorrect?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 15

What is the IUPAC name of the compound produced in the liver that is responsible for the symptoms of a hangover?

Accepted Answer

A) acetone 
B) acetic acid 
C) ethanol 
D) ethanal 
E) 2-propanol 
A) acetone 
B) acetic acid 
C) ethanol 
D) ethanal 
E) 2-propanol

Question 16

Methanol is toxic if ingested.The toxicity is due to the aldehyde produced when methanol is oxidized in the liver.Which of the following is the aldehyde formed by the oxidation of methanol?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 17

What is the name of the aqueous solution of formaldehyde that is available commercially as a tissue preservative?

Accepted Answer

A) acetone 
B) formalin 
C) acetaldehyde 
D) glycerol 
E) enol 
A) acetone 
B) formalin 
C) acetaldehyde 
D) glycerol 
E) enol

Question 18

An unknown compound is highly water soluble, forms a silver mirror in the Tollens' test, and forms a red precipitate in the Benedict's test.Which of the following compounds is consistent with this data?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 19

What is the structure of ethyl isopropyl ketone?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 20

What is the IUPAC name of the aldehyde produced when ethanol is oxidized?

Accepted Answer

A) acetal 
B) acetone 
C) ethanal 
D) ethanone 
E) None of the choices are correct. 
A) acetal 
B) acetone 
C) ethanal 
D) ethanone 
E) None of the choices are correct.

Exam 13: Aldehydes and Ketones

The compound decanal contributes to the odor and flavor of an orange.Which of the following statements about decanal is FALSE?

What class of compounds is represented by the general formula RCHO?

What type of compound is produced by the oxidation of an aldehyde?

Which of the statements concerning the compound shown below is FALSE?

What class of compounds is formed by oxidation of aldehydes?

Formaldehyde is used to kill viruses without damaging their genetic information.

What is the IUPAC name of the compound shown?

A ketone will react with Tollens' reagent to produce a silver mirror, but an aldehyde will not.

What alcohol undergoes oxidation to produce acetic acid?

Which of the following compounds would be expected to react similarly in a chemical reaction?

What is the common name of the simplest aldehyde?

The compound shown below is the enol form of butanal.

Which structure/name combination is incorrect?

What is the IUPAC name of the compound produced in the liver that is responsible for the symptoms of a hangover?

Methanol is toxic if ingested.The toxicity is due to the aldehyde produced when methanol is oxidized in the liver.Which of the following is the aldehyde formed by the oxidation of methanol?

What is the name of the aqueous solution of formaldehyde that is available commercially as a tissue preservative?

An unknown compound is highly water soluble, forms a silver mirror in the Tollens' test, and forms a red precipitate in the Benedict's test.Which of the following compounds is consistent with this data?

What is the structure of ethyl isopropyl ketone?

What is the IUPAC name of the aldehyde produced when ethanol is oxidized?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

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