FT IR Spectroscopy Why is it advantageous to record many FID signals from the same sample and then add them together? To remove inaccuracies caused by fluctuations in the applied magnetic field To ensure that all target nuclei in the sample have been excited None of these To increase sensitivity To remove inaccuracies caused by fluctuations in the applied magnetic field To ensure that all target nuclei in the sample have been excited None of these To increase sensitivity ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy How do you turn a signal recorded in the time domain into a frequency domain signal? Fourier transformation Measurement of peak areas By use of a Michelson interferometer None of the above Fourier transformation Measurement of peak areas By use of a Michelson interferometer None of the above ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens? The nucleus spins faster None of these The processional frequency of the nucleus increases The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field The nucleus spins faster None of these The processional frequency of the nucleus increases The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy The frequency of precession, the transition frequency and the Larmor frequency are same terms for the same frequency same terms for the different frequency different terms for the different frequency different terms for the same frequency same terms for the same frequency same terms for the different frequency different terms for the different frequency different terms for the same frequency ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy Which of the following is the basis of first dimension of separation for two-dimensional electrophoresis? Folding Isoelectric point Molecular mass Solubility Folding Isoelectric point Molecular mass Solubility ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In scanning electron microscopy None of these 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 a specimen is fixed and then coated with transition metal None of these 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 a specimen is fixed and then coated with transition metal ANSWER DOWNLOAD EXAMIANS APP
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