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What is the product? What is the product? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) All of the above
F) None of the above

Correct Answer

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Butanal (MW= 72) has a boiling point of 76 °C while butanol (MW= 74) has a boiling point of 118 °C.What accounts for this difference in boiling points?


A) Butanol is polar while butanal is not polar.
B) Butanol can exhibit dipole-dipole interactions while butanal cannot.
C) Butanol can hydrogen bond and butanal cannot hydrogen bond.
D) Butanal is less sterically hindered than butanol.

E) A) and B)
F) None of the above

Correct Answer

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What is the IUPAC for the following compound? What is the IUPAC for the following compound? A) 1-Formyl-2-nitropropane B) 1-Formyl-3-nitrobutane C) 2-Nitrobutanal D) 3-Nitrobutanal


A) 1-Formyl-2-nitropropane
B) 1-Formyl-3-nitrobutane
C) 2-Nitrobutanal
D) 3-Nitrobutanal

E) A) and D)
F) B) and D)

Correct Answer

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Which of the following oxidants would work for the following reaction? Which of the following oxidants would work for the following reaction? A) H<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> B) FeCl<sub>3</sub> C) I<sub>2</sub> D) Ag<sub>2</sub>O


A) H2Cr2O7
B) FeCl3
C) I2
D) Ag2O

E) A) and B)
F) B) and C)

Correct Answer

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What compound is consistent with the following 1H NMR spectrum? What compound is consistent with the following <sup>1</sup>H NMR spectrum? A) Acetone B) Propanal C) Cyclobutanone D) 2-butanone


A) Acetone
B) Propanal
C) Cyclobutanone
D) 2-butanone

E) B) and D)
F) B) and C)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) All of the above
F) A) and B)

Correct Answer

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Is the following reaction reversible and,if so,under what conditions? Is the following reaction reversible and,if so,under what conditions? A) No B) Yes,under acidic conditions C) Yes,using Pd/C D) Yes,under basic conditions


A) No
B) Yes,under acidic conditions
C) Yes,using Pd/C
D) Yes,under basic conditions

E) A) and B)
F) C) and D)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and C)

Correct Answer

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Give the IUPAC name for the following compound. Give the IUPAC name for the following compound. A) R-4-hydroxy-2-pentanone B) S-4-hydroxy-2-pentanone C) R-2-hydroxy-4-pentanone D) S-2-hydroxy-4-pentanone


A) R-4-hydroxy-2-pentanone
B) S-4-hydroxy-2-pentanone
C) R-2-hydroxy-4-pentanone
D) S-2-hydroxy-4-pentanone

E) None of the above
F) B) and D)

Correct Answer

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What is the missing reagent in the reaction below? What is the missing reagent in the reaction below? A) Methanol,acid B) Ethanol,acid C) NaOEt D) NaOMe


A) Methanol,acid
B) Ethanol,acid
C) NaOEt
D) NaOMe

E) B) and D)
F) A) and D)

Correct Answer

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B

Give the IUPAC name for the following compound. Give the IUPAC name for the following compound. A) R-3-bromobutanal B) S-3-bromobutanal C) R-2-bromobutan-4-al D) S-2-bromobutan-4-al


A) R-3-bromobutanal
B) S-3-bromobutanal
C) R-2-bromobutan-4-al
D) S-2-bromobutan-4-al

E) A) and D)
F) A) and B)

Correct Answer

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Give the IUPAC name for the following compound. Give the IUPAC name for the following compound. A) R-4-bromo-2-pentanone B) S-4-bromo-2-pentanone C) R-2-bromo-4-pentanone D) S-2-bromo-4-pentanone


A) R-4-bromo-2-pentanone
B) S-4-bromo-2-pentanone
C) R-2-bromo-4-pentanone
D) S-2-bromo-4-pentanone

E) A) and D)
F) A) and C)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and C)
F) C) and D)

Correct Answer

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What is the major organic product obtained from the following sequence of reactions? What is the major organic product obtained from the following sequence of reactions? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and D)
F) All of the above

Correct Answer

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C

What is the cyclic hemiacetal product formed from intramolecular cyclization of the following hydroxy aldehyde? What is the cyclic hemiacetal product formed from intramolecular cyclization of the following hydroxy aldehyde? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and D)
F) B) and C)

Correct Answer

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What is the first step in nucleophilic addition under acidic conditions?


A) Protonation of the nucleophile
B) Addition of the nucleophile
C) Loss of water
D) Protonation of the carbonyl

E) None of the above
F) B) and C)

Correct Answer

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D

What is (are) the product(s) of the following reaction? What is (are) the product(s) of the following reaction? A) I only B) II only C) III only D) II and III


A) I only
B) II only
C) III only
D) II and III

E) B) and C)
F) A) and D)

Correct Answer

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Using 1H NMR spectroscopy,how can you tell the difference between an aldehyde and a ketone?


A) An aldehyde has a C-H stretch (one or two) between 2700-2830 cm-1.
B) An aldehyde has a proton signal between 9-10 ppm.
C) A ketone has signals around 2-3 ppm.
D) A ketone has a signal around 200 ppm.

E) B) and D)
F) B) and C)

Correct Answer

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound? A) Pivaldehyde B) 2,2-Dimethylpropanal C) Tert-butyl aldehyde D) 2,2-Dimethylpentanal


A) Pivaldehyde
B) 2,2-Dimethylpropanal
C) Tert-butyl aldehyde
D) 2,2-Dimethylpentanal

E) C) and D)
F) B) and C)

Correct Answer

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Cyclic acetals are used as protecting groups for ketones or aldehydes because they are inert to all of the following reagents except


A) aqueous acid.
B) aqueous base.
C) oxidizing reagents.
D) reducing reagents.

E) All of the above
F) A) and B)

Correct Answer

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Showing 1 - 20 of 52

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