FT IR Spectroscopy Negative staining is a technique used in immunocytochemistry gel electrophoresis electron microscopy light microscopy immunocytochemistry gel electrophoresis electron microscopy light microscopy 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 What is meant by rotating frame of reference? That the sample is spun rapidly in the applied field That the detector rotates around the sample None of these If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space That the sample is spun rapidly in the applied field That the detector rotates around the sample None of these If the laboratory itself is imagined to be rotated at the Larmor frequency, viewing that individual magnetic moment vectors are fixed in space ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What is the name given to the relaxation process due to an interaction between an excited nucleus and the magnetic fields caused by nuclei in molecules moving around in the sample? Spin - spin relaxation Spin - spin - spin relaxation Spin - lattice relaxation None of these Spin - spin relaxation Spin - spin - spin relaxation Spin - lattice relaxation None of these ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy What does the Michelson interferometer do? Split a polychromatic beam of radiation into its component wavelengths None of these 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 Split a polychromatic beam of radiation into its component wavelengths None of these 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 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
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