FT IR Spectroscopy
In scanning electron microscopy

None of these
a specimen is fixed and then coated with thin layer of a heavy metal
a specimen is fixed and then coated with transition metal
a specimen is not fixed and then coated with thin layer of a heavy metal

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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 radio-frequency radiation whose frequency is swept across a predetermined range
By an intense pressure

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FT IR Spectroscopy
Why is it advantageous to record many FID signals from the same sample and then add them together?

To ensure that all target nuclei in the sample have been excited
None of these
To increase sensitivity
To remove inaccuracies caused by fluctuations in the applied magnetic field

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