FT IR Spectroscopy What does the Michelson interferometer do? Selectively filter certain wavelengths from a beam of I.R. radiation Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector None of these Split a polychromatic beam of radiation into its component wavelengths Selectively filter certain wavelengths from a beam of I.R. radiation Modulate the I.R. signal at a lower frequency, so that it can be observed by a detector None of these Split a polychromatic beam of radiation into its component wavelengths ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy An FT-IR instrument record a signal in the none of these time domain frequency domain both (a) and (b) none of these time domain frequency domain both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy In scanning electron microscopy 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 None of these a specimen is fixed and then coated with thin layer of a heavy metal 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 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 ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy The sequence of amino acids in proteins can be determined by means of identification of the -COOH terminal amino acids All of these identification of the -NH2 terminal amino acids partial cleavage of the original polypeptide into smaller polypeptides identification of the -COOH terminal amino acids All of these identification of the -NH2 terminal amino acids partial cleavage of the original polypeptide into smaller polypeptides ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy When radiation energy is absorbed by a spin 1/2 nucleus in a magnetic field, what happens? None of these The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field The processional frequency of the nucleus increases The nucleus spins faster None of these The angle of precession flips so that the magnetic moment of the nucleus opposes the applied field The processional frequency of the nucleus increases The nucleus spins faster ANSWER DOWNLOAD EXAMIANS APP
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