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Nuclear Magnetic Resosnace Spectrocopy and Evaulation of Simple 1H NMR Spectra of Select Organic Compounds
Quizzes

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1. NMR technique uses:
Microwave
Radio waves
Infrared radiation
Gamma radiation


2. The x-axis in a NMR spectrum is
ratio of the magnetic field strength in ppm
frequency in cm-1
mass to charge ratio (m/z)
Absorbance


3. A shielded proton is the one which experiences:
More electron density and more magnetic field strength
Less electron density and less magnetic field strength
More electron density and less magnetic field strength
Less electron density and more magnetic field strength


4. The internal reference standard used in NMR experiments is:
tetramethylsilane
deuterated solvents
Nor-Leucine
2,2-diphenyl-1-picrylhydrazyl


5. The TMS (tetramethylsilane) peak value is assigned at:
δ = 0.05
δ = 0.11
δ = 1.00
δ = 0.00


6. The number of hydrogens are calculated from peak integration by studying the
Intensity of the peak
Area under the curve
Position of the peak
frequency used


7. The most common deuterated solvent used for polar compounds is:
DMF
DMSO
Chroloform
Water


8. The 13C NMR spectrum gives information about:
Number of equivalent Carbon atoms
Number of non- equivalent Carbon atoms
Number of equivalent hydrogen atoms
Number of non- equivalent hydrogen atoms



9. The number of peaks tells you:
the number of different proton environments
the general environment of the protons
number of protons atoms on the adjacent atom
number of protons in each environment


10. In a NMR spectrum the peak multiplicity gives:
the number of different proton environments
the general environment of the protons
number of protons atoms on the adjacent atom
number of protons in each environment



Solutions


1. NMR technique uses:
Radio waves

2. The x-axis in a NMR spectrum is
ratio of the magnetic field strength in ppm

3. A shielded proton is the one which experiences:
More electron density and less magnetic field strength

4. The internal reference standard used in NMR experiments is:
tetramethylsilane

5. The TMS (tetramethylsilane) peak value is assigned at:
δ = 0.00

6. The number of hydrogens are calculated from peak integration by studying the
Aread under the curve

7. The most common deuterated solvent used for polar compounds is:
DMSO

8. The 13C NMR spectrum gives information about:
Number of non- equivalent Carbon atoms

9. The number of peaks tells you:
the number of different proton environments

10. In a NMR spectrum the peak multiplicity gives:
number of protons atoms on the adjacent atom