Question 1

What is the hydrogen deficiency index for a compound with a molecular formula of C6H11N?

Accepted Answer

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

Question 2

Which C9H10O compound gives the following 1H NMR spectrum?

Accepted Answer

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

Question 3

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2,3-dimethylbutane?

Accepted Answer

A)  two doublets 
B)  a doublet and a septet 
C)  a singlet and two doublets 
D)  a doublet and an octet 
A)  two doublets 
B)  a doublet and a septet 
C)  a singlet and two doublets 
D)  a doublet and an octet A

Question 4

Which of the protons in the following molecule appear furthest downfield in the 1H NMR spectrum?

Accepted Answer

A)  i 
B)  ii 
C)  iii 
D)  iv 
A)  i 
B)  ii 
C)  iii 
D)  iv

Question 5

What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of propane?

Accepted Answer

A)  singlet 
B)  doublet 
C)  triplet 
D)  quartet 
A)  singlet 
B)  doublet 
C)  triplet 
D)  quartet

Question 6

Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of two signals?

Accepted Answer

A)  only 1 
B)  only 2 
C)  only 2 and 3 
D)  1, 2, 3 and 4 
A)  only 1 
B)  only 2 
C)  only 2 and 3 
D)  1, 2, 3 and 4

Question 7

Identify the compound (C8H10) that gives the following 1H NMR spectrum.

Accepted Answer

p-xylene (

Question 8

Which of the following is not true regarding 1H NMR spectroscopy?

Accepted Answer

A)  a "downfield" peak appears at a lower value of d 
B)  on a 300 MHz instrument, a proton that adsorbs irradiation at a frequency 900 Hz higher than the adsorption of TMS appears at d 3 ppm. 
C)  d for a particular proton is independent of the magnetic field strength of the instrument used. 
D)  "deshielding" leads to peaks at higher values of d 
A)  a "downfield" peak appears at a lower value of d 
B)  on a 300 MHz instrument, a proton that adsorbs irradiation at a frequency 900 Hz higher than the adsorption of TMS appears at d 3 ppm. 
C)  d for a particular proton is independent of the magnetic field strength of the instrument used. 
D)  "deshielding" leads to peaks at higher values of d

Question 9

Which of the protons in the following molecule appear at the highest d-value in the 1H NMR spectrum?

Accepted Answer

A)  i 
B)  ii 
C)  iii 
D)  iv 
A)  i 
B)  ii 
C)  iii 
D)  iv

Question 10

Which of the following compounds gives a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?

Accepted Answer

A)  only i 
B)  only iii 
C)  only ii and iii 
D)  only ii, iii and iv 
A)  only i 
B)  only iii 
C)  only ii and iii 
D)  only ii, iii and iv

Question 11

What is the relative area of the six peaks in a sexet in an 1H NMR spectrum?

Accepted Answer

A)  1:2:3:3:2:1 
B)  1:3:6:6:3:1 
C)  1:5:10:10:5:1 
D)  1:6:15:15:6:1 
A)  1:2:3:3:2:1 
B)  1:3:6:6:3:1 
C)  1:5:10:10:5:1 
D)  1:6:15:15:6:1

Question 12

How many signals appear in the proton-decoupled 13C NMR spectrum of 1,2-dibromobenzene?

Accepted Answer

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

Question 13

How many sets of equivalent protons are there in 3-methylhexane?

Accepted Answer

A)  2 
B)  3 
C)  6 
D)  7 
A)  2 
B)  3 
C)  6 
D)  7

Question 14

Which C4H9Br compound gives a doublet at approximately 3.3 ppm in the 1H NMR spectrum?

Accepted Answer

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

Question 15

How many signals appear in the proton-decoupled 13C NMR spectrum of 1,3-dibromobenzene?

Accepted Answer

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

Question 16

Which of the following compounds have homotopic protons? 
1.propane
2.butane
3.2-methylpropane

Accepted Answer

A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3 
A)  only 1 
B)  only 2 
C)  only 1 and 2 
D)  1, 2 and 3

Question 17

Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet, triplet and quintet?

Accepted Answer

A)  CH3OCH2CH2CH2CH2OH 
B)  CH3OCH2CH2OCH2CH3 
C)  CH3OCH2CH2CH2OCH3 
D)  CH3OCH2CH(CH3)OCH3 
A)  CH3OCH2CH2CH2CH2OH 
B)  CH3OCH2CH2OCH2CH3 
C)  CH3OCH2CH2CH2OCH3 
D)  CH3OCH2CH(CH3)OCH3

Question 18

How many signals appear in the proton-decoupled 13C NMR spectrum of the following compound?

Accepted Answer

A)  7 
B)  8 
C)  9 
D)  11 
A)  7 
B)  8 
C)  9 
D)  11

Question 19

What is the hydrogen deficiency index for a compound with a molecular formula of C10H16O2?

Accepted Answer

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

Question 20

How many signals appear in proton-decoupled 13C NMR spectrum of 3,4-dimethylhexane?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

Exam 13: Nuclear Magnetic Resonance Spectroscopy

What is the hydrogen deficiency index for a compound with a molecular formula of C6H11N?

Which C9H10O compound gives the following 1H NMR spectrum?

Which of the following combinations of peaks appears in the 1H NMR spectrum of 2,3-dimethylbutane?

Which of the protons in the following molecule appear furthest downfield in the 1H NMR spectrum?

What is the splitting of the signal in the 1H NMR spectrum for the methyl protons of propane?

Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of two signals?

Identify the compound (C8H10) that gives the following 1H NMR spectrum.

Which of the following is not true regarding 1H NMR spectroscopy?

Which of the protons in the following molecule appear at the highest d-value in the 1H NMR spectrum?

Which of the following compounds gives a 1H NMR spectrum consisting of two singlets and a 13C NMR consisting of consisting of three signals?

What is the relative area of the six peaks in a sexet in an 1H NMR spectrum?

How many signals appear in the proton-decoupled 13C NMR spectrum of 1,2-dibromobenzene?

How many sets of equivalent protons are there in 3-methylhexane?

Which C4H9Br compound gives a doublet at approximately 3.3 ppm in the 1H NMR spectrum?

How many signals appear in the proton-decoupled 13C NMR spectrum of 1,3-dibromobenzene?

Which of the following compounds have homotopic protons? 1.propane 2.butane 3.2-methylpropane

Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet, triplet and quintet?

How many signals appear in the proton-decoupled 13C NMR spectrum of the following compound?

What is the hydrogen deficiency index for a compound with a molecular formula of C10H16O2?

How many signals appear in proton-decoupled 13C NMR spectrum of 3,4-dimethylhexane?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Filters

What is the hydrogen deficiency index for a compound with a molecular formula of C₆H₁₁N?

Which C₉H₁₀O compound gives the following ¹H NMR spectrum?

Which of the following combinations of peaks appears in the ¹H NMR spectrum of 2,3-dimethylbutane?

Which of the protons in the following molecule appear furthest downfield in the ¹H NMR spectrum?

What is the splitting of the signal in the ¹H NMR spectrum for the methyl protons of propane?

Which C₄H₉Br compound(s) gives a ¹³C NMR spectrum consisting of two signals?

Identify the compound (C₈H₁₀) that gives the following ¹H NMR spectrum.

Which of the following is not true regarding ¹H NMR spectroscopy?

Which of the protons in the following molecule appear at the highest d-value in the ¹H NMR spectrum?

Which of the following compounds gives a ¹H NMR spectrum consisting of two singlets and a ¹³C NMR consisting of consisting of three signals?

What is the relative area of the six peaks in a sexet in an ¹H NMR spectrum?

How many signals appear in the proton-decoupled ¹³C NMR spectrum of 1,2-dibromobenzene?

Which C₄H₉Br compound gives a doublet at approximately 3.3 ppm in the ¹H NMR spectrum?

How many signals appear in the proton-decoupled ¹³C NMR spectrum of 1,3-dibromobenzene?

Which of the following compounds gives a ¹H NMR spectrum consisting of only a singlet, triplet and quintet?

How many signals appear in the proton-decoupled ¹³C NMR spectrum of the following compound?

What is the hydrogen deficiency index for a compound with a molecular formula of C₁₀H₁₆O₂?

How many signals appear in proton-decoupled ¹³C NMR spectrum of 3,4-dimethylhexane?