Question 1

Which of the following 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 2

What is the common name of 3-methyl-4-heptanone?

Accepted Answer

A)  propyl butyl ketone 
B)  propyl sec-butyl ketone 
C)  propyl tert-butyl ketone 
D)  propyl isobutyl ketone 
A)  propyl butyl ketone 
B)  propyl sec-butyl ketone 
C)  propyl tert-butyl ketone 
D)  propyl isobutyl ketone

Question 3

How many different aldehydes have the molecular formula C4H8O?

Accepted Answer

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

Question 4

Examine the following ball-and -stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element.   What would be the product of the reaction of this substance with K2Cr2O7 in the presence of H2SO4?

Accepted Answer

A)  propanal 
B)  1-propanol 
C)  propanoic acid 
D)  ethanoic acid 
E)  This substance does not react under these conditions. 
A)  propanal 
B)  1-propanol 
C)  propanoic acid 
D)  ethanoic acid 
E)  This substance does not react under these conditions.

Question 5

Which of the following can undergo keto-enol tautomerism?

Accepted Answer

A)  2-methyl-3-pentanone 
B)  3,3-dimethyl-2-butanone 
C)  both a and b 
D)  neither a nor b 
A)  2-methyl-3-pentanone 
B)  3,3-dimethyl-2-butanone 
C)  both a and b 
D)  neither a nor b

Question 6

What is the IUPAC name for the following compound?

Accepted Answer

A)  2,3-dihydroxycyclopentanone 
B)  1,2-dihydroxy-3-cyclopentanone 
C)  cyclopentanone-1,2-diol 
D)  cyclopentanone-2,3-diol 
A)  2,3-dihydroxycyclopentanone 
B)  1,2-dihydroxy-3-cyclopentanone 
C)  cyclopentanone-1,2-diol 
D)  cyclopentanone-2,3-diol

Question 7

The reaction of which combination of reactants result in the formation of a hemiacetal?

Accepted Answer

A)  ketone and alcohol 
B)  ketone and aldehyde 
C)  ketone and carboxylic acid 
D)  none of these 
A)  ketone and alcohol 
B)  ketone and aldehyde 
C)  ketone and carboxylic acid 
D)  none of these

Question 8

How many different stereoisomers are possible for the following structure?

Accepted Answer

A)  1 
B)  2 
C)  4 
D)  8 
A)  1 
B)  2 
C)  4 
D)  8

Question 9

Examine the following ball-and -stick models. Atoms other than carbon and hydrogen are labeled with the symbol of the element.       Which of the following is characteristic of this reaction?

Accepted Answer

A)  represents enantiomers 
B)  equilibrium between conformers 
C)  keto form shown on the right 
D)  requires the presence of a α hydrogen 
E)  none of the above 
A)  represents enantiomers 
B)  equilibrium between conformers 
C)  keto form shown on the right 
D)  requires the presence of a α hydrogen 
E)  none of the above

Question 10

If pairs of enantiomers are only counted once, how many different aldehydes have the molecular formula C5H10O?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 11

Treatment of 2-hexanone with potassium dichromate in sulfuric acid will give which of the following products?

Accepted Answer

A)  hexanal 
B)  hexanol 
C)  hexanoic acid 
D)  Unreacted 2-hexanone will be recovered. 
A)  hexanal 
B)  hexanol 
C)  hexanoic acid 
D)  Unreacted 2-hexanone will be recovered.

Question 12

Which of the following statements is true?

Accepted Answer

A)  Both aldehydes and ketones are easily oxidized. 
B)  Neither aldehydes nor ketones are easily oxidized. 
C)  Aldehydes are easily oxidized, but ketones are not. 
D)  Ketones are easily oxidized, but aldehydes are not. 
A)  Both aldehydes and ketones are easily oxidized. 
B)  Neither aldehydes nor ketones are easily oxidized. 
C)  Aldehydes are easily oxidized, but ketones are not. 
D)  Ketones are easily oxidized, but aldehydes are not.

Question 13

What is the IUPAC name of propyl butyl ketone?

Accepted Answer

A)  4-octanone 
B)  2-methyl-4-heptanone 
C)  3-methyl-4-heptanone 
D)  2,2-dimethyl-3-hexanone 
A)  4-octanone 
B)  2-methyl-4-heptanone 
C)  3-methyl-4-heptanone 
D)  2,2-dimethyl-3-hexanone

Question 14

In which of the following can hydrogen bonding occur?

Accepted Answer

A)  in pure formaldehyde 
B)  in pure acetone 
C)  in a solution of formaldehyde in water 
D)  in none of these cases 
A)  in pure formaldehyde 
B)  in pure acetone 
C)  in a solution of formaldehyde in water 
D)  in none of these cases

Question 15

Which type of biologically important molecules includes many cyclic hemiacetals?

Accepted Answer

A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  none of these 
A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  none of these

Question 16

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 17

Which of these statements is true concerning the following reaction?

Accepted Answer

A)  Both the C=C and C=O bonds will be reduced. 
B)  Only the C=C bond will be reduced. 
C)  Only the C=O bond will be reduced. 
D)  Neither the C=C nor C=O bond will be reduced. 
A)  Both the C=C and C=O bonds will be reduced. 
B)  Only the C=C bond will be reduced. 
C)  Only the C=O bond will be reduced. 
D)  Neither the C=C nor C=O bond will be reduced.

Question 18

Examine the following ball-and -stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element.   Which of the following groups also contain a C=O group?

Accepted Answer

A)  carboxylic acid 
B)  ester 
C)  aldehyde 
D)  All of these contain the carbonyl group. 
A)  carboxylic acid 
B)  ester 
C)  aldehyde 
D)  All of these contain the carbonyl group.

Question 19

Which of the following hydroxyaldehydes can be converted to a hydroxyketone through tautomerism?

Accepted Answer

A)  2-hydroxybutanal 
B)  3-hydroxybutanal 
C)  both a and b 
D)  neither a nor b 
A)  2-hydroxybutanal 
B)  3-hydroxybutanal 
C)  both a and b 
D)  neither a nor b

Question 20

What is the common name of 2-octanone?

Accepted Answer

A)  methyl heptyl ketone 
B)  heptyl methyl ketone 
C)  methyl hexyl ketone 
D)  hexyl methyl ketone 
A)  methyl heptyl ketone 
B)  heptyl methyl ketone 
C)  methyl hexyl ketone 
D)  hexyl methyl ketone

Exam 17: Aldehydes and Ketones

Which of the following has the lowest boiling point?

What is the common name of 3-methyl-4-heptanone?

How many different aldehydes have the molecular formula C4H8O?

Examine the following ball-and -stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element. What would be the product of the reaction of this substance with K2Cr2O7 in the presence of H2SO4?

Which of the following can undergo keto-enol tautomerism?

What is the IUPAC name for the following compound?

The reaction of which combination of reactants result in the formation of a hemiacetal?

How many different stereoisomers are possible for the following structure?

Examine the following ball-and -stick models. Atoms other than carbon and hydrogen are labeled with the symbol of the element. Which of the following is characteristic of this reaction?

If pairs of enantiomers are only counted once, how many different aldehydes have the molecular formula C5H10O?

Treatment of 2-hexanone with potassium dichromate in sulfuric acid will give which of the following products?

Which of the following statements is true?

What is the IUPAC name of propyl butyl ketone?

In which of the following can hydrogen bonding occur?

Which type of biologically important molecules includes many cyclic hemiacetals?

Which of the following is a correct IUPAC name?

Which of these statements is true concerning the following reaction?

Examine the following ball-and -stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element. Which of the following groups also contain a C=O group?

Which of the following hydroxyaldehydes can be converted to a hydroxyketone through tautomerism?

What is the common name of 2-octanone?

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Filters

How many different aldehydes have the molecular formula C₄H₈O?

Examine the following ball-and -stick model. Atoms other than carbon and hydrogen are labeled with the symbol of the element. What would be the product of the reaction of this substance with K₂Cr₂O₇ in the presence of H₂SO₄?

If pairs of enantiomers are only counted once, how many different aldehydes have the molecular formula C₅H₁₀O?