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 pulse of radiation which contains a wide range of frequencies By an intense pressure None of these 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 By an intense pressure 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 None of these Spin - lattice relaxation Spin - spin - spin relaxation Spin - spin relaxation None of these Spin - lattice relaxation Spin - spin - spin relaxation 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 Which of the following is the basis of first dimension of separation for two-dimensional electrophoresis? Solubility Folding Molecular mass Isoelectric point Solubility Folding Molecular mass Isoelectric point ANSWER DOWNLOAD EXAMIANS APP
FT IR Spectroscopy The sequence of amino acids in proteins can be determined by means of 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 identification of the -COOH terminal amino acids All of these 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 6 2 4 3 6 2 4 ANSWER DOWNLOAD EXAMIANS APP
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