FT IR Spectroscopy Which of the following is the basis of first dimension of separation for two-dimensional electrophoresis? Folding Solubility Molecular mass Isoelectric point Folding Solubility Molecular mass Isoelectric point ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy How do you turn a signal recorded in the time domain into a frequency domain signal? By use of a Michelson interferometer Measurement of peak areas None of the above Fourier transformation By use of a Michelson interferometer Measurement of peak areas None of the above Fourier transformation ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What does the Michelson interferometer do? 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 None of these Selectively filter certain wavelengths from a beam of I.R. radiation 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 None of these Selectively filter certain wavelengths from a beam of I.R. radiation ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In FT-NMR, how are nuclei excited? None of these By radio-frequency radiation whose frequency is swept across a predetermined range By an intense pressure By an intense pulse of radiation which contains a wide range of frequencies None of these By radio-frequency radiation whose frequency is swept across a predetermined range By an intense pressure By an intense pulse of radiation which contains a wide range of frequencies ANSWER DOWNLOAD EXAMIANS APP
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 In scanning electron microscopy 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 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 ANSWER DOWNLOAD EXAMIANS APP
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