FT IR Spectroscopy An FT-IR instrument record a signal in the frequency domain both (a) and (b) none of these time domain frequency domain both (a) and (b) none of these time domain ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy How many possible orientations do spin 1/2 nuclei have when they are located in an applied magnetic field? 3 4 2 6 3 4 2 6 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 None of the above Measurement of peak areas Fourier transformation By use of a Michelson interferometer None of the above Measurement of peak areas Fourier transformation ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In FT-NMR, how are nuclei excited? 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 None of these By an intense pressure By radio-frequency radiation whose frequency is swept across a predetermined range ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What does the Michelson interferometer do? 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 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 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 processional frequency of the nucleus increases The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field None of these The nucleus spins faster The processional frequency of the nucleus increases The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field None of these The nucleus spins faster ANSWER DOWNLOAD EXAMIANS APP
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