Analytical instruments MCQ Quiz Hub

Analytical Instrumentation MCQ Question Set 13

Choose a topic to test your knowledge and improve your Analytical instruments skills

1. 532.5 eV matches which of the following specific atom type?




2. By studying which of the following can we determine if the surface corresponds to C-O or C=O chemical form?




3. Which of the following is the detection limit of ESCA?




4. The characterisation of auger spectroscopy can be achieved up to which of the following depths?




5. Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following?




6. AES is limited when it comes to very high resolution studies.




7. Qualitative chemical analysis is very often performed using which of the following?




8. Electron ionization can produce which of the following?




9. Electron ionisation can produce ESCA electrons.




10. Which of the following is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level?




11. In ESCA process, the photon ejects which of the following?




12. In Auger process, an electron drops to fill which of the following?




13. Auger electron spectroscopy involves the irradiation of the surface to be analysed with a beam of electrons of energy in the _________ range.




14. In Auger spectroscopy, beam currents are typically _____ in a beam of diameter 0.5mm.




15. Which of the following is the detection limit of Auger Electron Spectroscopy?




16. Which of the following denotes the sample destruction that occurs in Auger electron spectroscopy?




17. How is the specificity of Auger electron spectroscopy?




18. AES is more sensitive than XPS because of which of the following factors?




19. A basic X-ray source includes which of the following components?




20. The anode is held at __________ positive potential and the filament is held at ____________ potential.




21. Which of the following is one of the most commonly used anode material?




22. Which is the most intense line in the X-ray spectrum?




23. Which of the following must be used with the X-ray source to have high energy resolution?




24. Magnetic deflection energy analysers are effective than electrostatic types.




25. Double-pass cylindrical mirror energy analyser has how many mirrors?




26. In spherical sector analyser, ____ is detected and plotted as a function of energy.




27. Which of the following is the most commonly used detector in ESCA and AES?




28. Electron detector has a _______ doped glass tube with a secondary semiconducting coating.




29. The output of the multiplier is fed to which of the following immediately?




30. Which of the following is the ideal vacuum for electron spectrometers?




31. Which of the following is the most commonly used magnetic shielding?




32. Charging effect can be suppressed by supplying flood of electrons having which of the following?




33. Synchroton radiation has several advantages over conventional radiation.




34. In Ion spectroscopy, the primary ion is usually which of the following?




35. The kinetic energy of the primary ion should be in which of the following range?




36. If the primary ion is elastically scattered, the kinetic energy of the reflected primary ion will depend on which of the following?




37. Which of the following causes the phenomena of sputtering?




38. The fragments formed during sputtering can be either neutral atoms or ions. The ions can only be positive.




39. Which of the following is the energy range of ISS?




40. Which of the following is the spectral range of SIMS?




41. Both ISS and SIMS have depth profiling capability.




42. Which of the following is denotes the absolute quantitative analysis of SIMS?




43. Which of the following is the amount of matrix effect that occurs in SIMS?




44. Which of the following is the x-y resolution of ISS?




45. Which of the following is the x-y resolution of SIMS?




46. In ion spectroscopy, the positive ions are focussed on the sample at which of the following angles?




47. Only those electrons which are in a selected small solid angle are received in the ________ electrostatic analyser.




48. Which of the following can be used as the detector in ion spectroscopy?




49. In order to obtain ISS spectra, the backscattered primary ions are sampled by which of the following?




50. Which of the following is the energy after collision with a surface atom for a scattering angle of 90o when Eo is the energy of the incident ion, M1 is the mass of the incident ion and M2 is the mass of the target surface?