Question 1

The Benedict's test may be used to distinguish

Accepted Answer

A) aldehydes from ketones. 
B) ketones from alcohols. 
C) acids from amines. 
D) alcohols from alkenes. 
E) esters from acids. 
A) aldehydes from ketones. 
B) ketones from alcohols. 
C) acids from amines. 
D) alcohols from alkenes. 
E) esters from acids. A

Question 2

Which of these compounds is the hemiacetal that forms when ethanol reacts with propanal?

Accepted Answer

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

Question 3

Aldehydes and ketones may be reduced to

Accepted Answer

A) alcohols. 
B) acids. 
C) alkanes. 
D) esters. 
E) ethers. 
A) alcohols. 
B) acids. 
C) alkanes. 
D) esters. 
E) ethers. A

Question 4

How many hydrogen atoms are bonded to the carbonyl group in a ketone?

Accepted Answer

A) none 
B) one 
C) two 
D) three 
E) four 
A) none 
B) one 
C) two 
D) three 
E) four

Question 5

Low-molecular-weight ketones are soluble in water. What is the shortest length of the carbon chain where insolubility becomes important?

Accepted Answer

A) one 
B) two 
C) four 
D) five 
E) eight 
A) one 
B) two 
C) four 
D) five 
E) eight

Question 6

What is the acetal formed when propanone reacts with two molecules of methanol?

Accepted Answer

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

Question 7

What is the name of this compound?

Accepted Answer

A) 2-pentanone 
B) 2-methyl-3-butanone 
C) 3-methyl-2-butanone 
D) methyl propyl ketone 
E) 2-methyl-3-ketone butane 
A) 2-pentanone 
B) 2-methyl-3-butanone 
C) 3-methyl-2-butanone 
D) methyl propyl ketone 
E) 2-methyl-3-ketone butane

Question 8

Which of the folowing compounds contains a ketone functional group?

Accepted Answer

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

Question 9

Three functional groups found in this compound are

Accepted Answer

A) alcohol, aldehyde, and ether. 
B) alcohol, ether, and ketone. 
C) aldehyde, ether, and carboxylic acid. 
D) alcohol, aromatic, and ether. 
E) cycloalkene, alcohol, and carboxylic acid. 
A) alcohol, aldehyde, and ether. 
B) alcohol, ether, and ketone. 
C) aldehyde, ether, and carboxylic acid. 
D) alcohol, aromatic, and ether. 
E) cycloalkene, alcohol, and carboxylic acid.

Question 10

How many lone pairs of electrons does the oxygen in a carbonyl group have?

Accepted Answer

A) None, they're all bonded. 
B) one 
C) two 
D) three 
E) four 
A) None, they're all bonded. 
B) one 
C) two 
D) three 
E) four

Question 11

Formalin is

Accepted Answer

A) a plastic. 
B) another name for formaldehyde. 
C) an excellent solvent. 
D) a polymer. 
E) a 40% aqueous solution of formaldehyde. 
A) a plastic. 
B) another name for formaldehyde. 
C) an excellent solvent. 
D) a polymer. 
E) a 40% aqueous solution of formaldehyde.

Question 12

What is the IUPAC name for this compound?

Accepted Answer

A) 2,5-dimethylcyclohexanone 
B) 1,4-dimethyl-2-cyclohexanone 
C) methylcyclohexanone 
D) 1,4-dimethyl-3-cyclohexanone 
E) cyclohexyl methyl ketone 
A) 2,5-dimethylcyclohexanone 
B) 1,4-dimethyl-2-cyclohexanone 
C) methylcyclohexanone 
D) 1,4-dimethyl-3-cyclohexanone 
E) cyclohexyl methyl ketone

Question 13

The compound 2-propanone is also known as

Accepted Answer

A)  propylone. 
B)    
C)  2-propanone. 
D)  acetone. 
E)  dimethyl ketone. 
A)  propylone. 
B)    
C)  2-propanone. 
D)  acetone. 
E)  dimethyl ketone.

Question 14

The Tollens' test may be used to distinguish

Accepted Answer

A) alcohols from alkenes. 
B) ketones from alcohols. 
C) acids from amines. 
D) esters from acids. 
E) aldehydes from ketones. 
A) alcohols from alkenes. 
B) ketones from alcohols. 
C) acids from amines. 
D) esters from acids. 
E) aldehydes from ketones.

Question 15

What is the IUPAC name for this compound?

Accepted Answer

A) methyl aldehyde 
B) methanal 
C) ethanal 
D) 1-ethanaldehyde 
E) 1-ethanone 
A) methyl aldehyde 
B) methanal 
C) ethanal 
D) 1-ethanaldehyde 
E) 1-ethanone

Question 16

The carbonyl group consists of

Accepted Answer

A) a carbon singly bonded to an oxygen and the oxygen singly bonded to another carbon. 
B) a carbon singly bonded to an oxygen and the oxygen bonded to a hydrogen. 
C) a carbon triply bonded to an oxygen. 
D) a carbon double bonded to an oxygen. 
E) a carbon singly bonded to an oxygen. 
A) a carbon singly bonded to an oxygen and the oxygen singly bonded to another carbon. 
B) a carbon singly bonded to an oxygen and the oxygen bonded to a hydrogen. 
C) a carbon triply bonded to an oxygen. 
D) a carbon double bonded to an oxygen. 
E) a carbon singly bonded to an oxygen.

Question 17

The increased boiling point of ketones compared to alkanes and ethers of similar molar mass is due to

Accepted Answer

A) resonance. 
B) a bent chain structure. 
C) hydrogen bonding. 
D) ionic interactions. 
E) dipole-dipole interactions. 
A) resonance. 
B) a bent chain structure. 
C) hydrogen bonding. 
D) ionic interactions. 
E) dipole-dipole interactions.

Question 18

In the IUPAC naming system, an aldehyde is named by replacing the -e of the name of the corresponding alkane with

Accepted Answer

A) al. 
B) one. 
C) ene. 
D) yne. 
E) ol. 
A) al. 
B) one. 
C) ene. 
D) yne. 
E) ol.

Question 19

Acetone is a ketone commonly used as a

Accepted Answer

A) solvent. 
B) preservative. 
C) fuel. 
D) drain cleaner. 
E) flavoring agent. 
A) solvent. 
B) preservative. 
C) fuel. 
D) drain cleaner. 
E) flavoring agent.

Question 20

Which of the following ketones is the most solubale in water?

Accepted Answer

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

Exam 14: Aldehydes and Ketones

The Benedict's test may be used to distinguish

Which of these compounds is the hemiacetal that forms when ethanol reacts with propanal?

Aldehydes and ketones may be reduced to

How many hydrogen atoms are bonded to the carbonyl group in a ketone?

Low-molecular-weight ketones are soluble in water. What is the shortest length of the carbon chain where insolubility becomes important?

What is the acetal formed when propanone reacts with two molecules of methanol?

What is the name of this compound?

Which of the folowing compounds contains a ketone functional group?

Three functional groups found in this compound are

How many lone pairs of electrons does the oxygen in a carbonyl group have?

Formalin is

What is the IUPAC name for this compound?

The compound 2-propanone is also known as

The Tollens' test may be used to distinguish

What is the IUPAC name for this compound?

The carbonyl group consists of

The increased boiling point of ketones compared to alkanes and ethers of similar molar mass is due to

In the IUPAC naming system, an aldehyde is named by replacing the -e of the name of the corresponding alkane with

Acetone is a ketone commonly used as a

Which of the following ketones is the most solubale in water?

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