FT IR Spectroscopy Why is it advantageous to record many FID signals from the same sample and then add them together? To ensure that all target nuclei in the sample have been excited To remove inaccuracies caused by fluctuations in the applied magnetic field None of these To increase sensitivity To ensure that all target nuclei in the sample have been excited To remove inaccuracies caused by fluctuations in the applied magnetic field None of these To increase sensitivity ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What does the Michelson interferometer do? Selectively filter certain wavelengths from a beam of I.R. radiation None of these Split a polychromatic beam of radiation into its component wavelengths Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector Selectively filter certain wavelengths from a beam of I.R. radiation None of these Split a polychromatic beam of radiation into its component wavelengths Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy Negative staining is a technique used in gel electrophoresis light microscopy electron microscopy immunocytochemistry gel electrophoresis light microscopy electron microscopy immunocytochemistry ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In FT-NMR, how are nuclei excited? By radio-frequency radiation whose frequency is swept across a predetermined range None of these By an intense pressure By an intense pulse of radiation which contains a wide range of frequencies By radio-frequency radiation whose frequency is swept across a predetermined range None of these By an intense pressure By an intense pulse of radiation which contains a wide range of frequencies ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In scanning electron microscopy a specimen is fixed and then coated with thin layer of a heavy metal a specimen is fixed and then coated with transition metal None of these a specimen is not fixed and then coated with thin layer of a heavy metal a specimen is fixed and then coated with thin layer of a heavy metal a specimen is fixed and then coated with transition metal None of these a specimen is not fixed and then coated with thin layer of a heavy metal ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy The frequency of precession, the transition frequency and the Larmor frequency are different terms for the same frequency same terms for the different frequency same terms for the same frequency different terms for the different frequency different terms for the same frequency same terms for the different frequency same terms for the same frequency different terms for the different frequency ANSWER DOWNLOAD EXAMIANS APP
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