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1. Which of the following is a classical analytical technique? A. UV-Vis Spectroscopy
B. Atomic Absorption Spectroscopy. C. Titration. D. Gas Chromatography
2. Which analytical technique separates components based on differences in their
distribution between two phases? A. Spectroscopy. B. Titration. C. Chromatography
D. Gravimetry
3. In Atomic Absorption Spectroscopy (AAS), the absorption of light is due to: A.
Molecular transitions. B. Ionization of atoms. C. Excitation of electrons in atoms
D. Emission from excited atoms.
4. In gas chromatography (GC), the mobile phase is typically: A. Liquid. B. Solid
C. Gas. D. Plasma
5. The process of dividing a large sample into smaller, representative samples for ease of
handling is called: A. Subsampling. B. Composite sampling. C. Stratified sampling. D.
Random sampling.
6. Which spectroscopy technique is most useful for identifying functional groups in organic
compounds? A. UV-Vis. B. Infrared (IR). C. AAS. D. NMR
7. Which analytical method is most appropriate for determining the elemental composition
of metals? A. NMR Spectroscopy. B. UV-Vis Spectrophotometry
C. AAS (Atomic Absorption Spectroscopy). D. IR Spectroscopy
8. The working principle of UV-Vis spectroscopy is based on: A. Absorption of microwave
radiation. B. Emission of visible light. C. Absorption of ultraviolet or visible light by
electrons. D. Rotation of molecules
9. Which document typically records all calibration activities and results? A. Calibration
logbook. B. Analytical report. C. Method validation report. D. Quality manual.
10. In Mass Spectrometry, molecules are identified based on their: A. Absorption of IR light.
B. Retention time. C. Mass-to-charge ratio (m/z). D. Electron affinity

1 answer

  1. C. Titration.
  2. C. Chromatography.
  3. C. Excitation of electrons in atoms.
  4. C. Gas.
  5. A. Subsampling.
  6. B. Infrared (IR).
  7. C. AAS (Atomic Absorption Spectroscopy).
  8. C. Absorption of ultraviolet or visible light by electrons.
  9. A. Calibration logbook.
  10. C. Mass-to-charge ratio (m/z).