Which of the following is not an advantage of Fourier transform spectroscopy? a)

Question

Which of the following is not an advantage of Fourier transform spectroscopy? a) Fourier transform spectroscopy offers improved signal-to-noise ratio. b) Fourier transform spectroscopy allows for the acquisition of spectra in a very short time. c) Fourier transform spectroscopy is applicable to all important regions of the electromagnetic spectrum. What is an Optode? a) A device used to increase the number of electrons produced by a photosensitive material. b) A device created by placing a chemically sensitive layer at the end of an optical fiber. c) An optical device used to disperse light into its component wavelengths. Selecting the appropriate wavelength and bandwidth for a spectrophotometric analysis is very important. Which of the following is a correct statement regarding the bandwidth? a) The bandwidth should be as large as possible. b) The bandwidth should be as small as possible. c) The bandwidth should be as large as possible but small compared with the band being measured. A number of things can happen to light when it strikes a sample. Which of the following best represents what happens to light when it strikes a sample? a) Light striking a sample can be transmitted or absorbed. b) Light striking a sample can be transmitted, absorbed, or reflected. c) Light striking a sample can be transmitted, absorbed, reflected, or scattered.

Explanation / Answer

7. statement not an advantage of FT spectroscopy,

c) Fourier transform spectroscopy is applicable to all important regions of the electromeganetic spectrum.

8. An optode,

b) a device created by placing a chemically sensitive layer at the end of an optical fibre.

9. Selecting proper wavelength and bandwidth in spectrophotometric analysis is very important as,

b) The bandwidth should be as small as possible.

10. When lights strikes a sample,

c) light striking a sample can be trasnmitted, absorbed, reflected or scattered

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