FT IR Spectroscopy Why is it advantageous to record many FID signals from the same sample and then add them together? None of these To remove inaccuracies caused by fluctuations in the applied magnetic field To ensure that all target nuclei in the sample have been excited To increase sensitivity None of these To remove inaccuracies caused by fluctuations in the applied magnetic field To ensure that all target nuclei in the sample have been excited To increase sensitivity ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What is meant by rotating frame of reference? That the sample is spun rapidly in the applied field If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space None of these That the detector rotates around the sample That the sample is spun rapidly in the applied field If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space None of these That the detector rotates around the sample ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy An FT-IR instrument record a signal in the frequency domain none of these time domain both (a) and (b) frequency domain none of these time domain both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In scanning electron microscopy a specimen is fixed and then coated with transition metal a specimen is fixed and then coated with thin layer of a heavy metal a specimen is not fixed and then coated with thin layer of a heavy metal None of these a specimen is fixed and then coated with transition metal a specimen is fixed and then coated with thin layer of a heavy metal a specimen is not fixed and then coated with thin layer of a heavy metal None of these ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In FT-NMR, how are nuclei excited? None of these By an intense pressure By radio-frequency radiation whose frequency is swept across a predetermined range By an intense pulse of radiation which contains a wide range of frequencies None of these By an intense pressure By radio-frequency radiation whose frequency is swept across a predetermined range By an intense pulse of radiation which contains a wide range of frequencies 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 different terms for the different frequency same terms for the same frequency same terms for the different frequency different terms for the same frequency different terms for the different frequency same terms for the same frequency same terms for the different frequency ANSWER DOWNLOAD EXAMIANS APP
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