FT IR Spectroscopy
Which of the following is the basis of first dimension of separation for two-dimensional electrophoresis?

Folding
Isoelectric point
Molecular mass
Solubility

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 pulse of radiation which contains a wide range of frequencies
By an intense pressure

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

ANSWER DOWNLOAD EXAMIANS APP

FT IR Spectroscopy
What does the Michelson interferometer do?

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

ANSWER DOWNLOAD EXAMIANS APP