MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Analytical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the detection limit of Auger Electron Spectroscopy? |
| A. | 0.1% monolayer |
| B. | 0.5% monolayer |
| C. | 1% monolayer |
| D. | 2% monolayer |
| Answer» C. 1% monolayer | |
| 2. |
In Auger spectroscopy, beam currents are typically _____ in a beam of diameter 0.5mm. |
| A. | 5-10 µA |
| B. | 5-20 µA |
| C. | 5-30 µA |
| D. | 5-50 µA |
| Answer» E. | |
| 3. |
Auger electron spectroscopy involves the irradiation of the surface to be analysed with a beam of electrons of energy in the _________ range. |
| A. | 1-2 KeV |
| B. | 2-4 KeV |
| C. | 4-8 KeV |
| D. | 1-8 KeV |
| Answer» B. 2-4 KeV | |
| 4. |
AUGER_ELECTRON_SPECTROSCOPY_INVOLVES_THE_IRRADIATION_OF_THE_SURFACE_TO_BE_ANALYSED_WITH_A_BEAM_OF_ELECTRONS_OF_ENERGY_IN_THE___________RANGE.?$ |
| A. | 1-2 KeV |
| B. | 2-4 KeV |
| C. | 4-8 KeV |
| D. | 1-8 KeV |
| Answer» B. 2-4 KeV | |
| 5. |
Which of the following is the detection limit of Auger Electron Spectroscopy?$ |
| A. | 0.1% monolayer |
| B. | 0.5% monolayer |
| C. | 1% monolayer |
| D. | 2% monolayer |
| Answer» C. 1% monolayer | |
| 6. |
In Auger spectroscopy, beam currents are typically _____ in a beam of diameter 0.5mm.$ |
| A. | 5-10 µA |
| B. | 5-20 µA |
| C. | 5-30 µA |
| D. | 5-50 µA |
| Answer» E. | |
| 7. |
AES is more sensitive than XPS because of which of the following factors? |
| A. | Binding energies of electrons |
| B. | Kinetic energies of electrons |
| C. | Mass of electrons |
| D. | Mass to charge ratio of electrons |
| Answer» C. Mass of electrons | |
| 8. |
How is the specificity of Auger electron spectroscopy? |
| A. | Very bad |
| B. | Bad |
| C. | Good |
| D. | Very good |
| Answer» D. Very good | |
| 9. |
Which of the following denotes the sample destruction that occurs in Auger electron spectroscopy? |
| A. | None in 95% of sample |
| B. | None in 99% of sample |
| C. | None in 100% of sample |
| D. | Frequent |
| Answer» E. | |
| 10. |
In Auger process, an electron drops to fill which of the following? |
| A. | 1s hole |
| B. | 1p hole |
| C. | 2s hole |
| D. | 2p hole |
| Answer» B. 1p hole | |
| 11. |
In ESCA process, the photon ejects which of the following? |
| A. | 1s electron |
| B. | 1p electron |
| C. | 2s electron |
| D. | 2p electron |
| Answer» B. 1p electron | |
| 12. |
Which of the following is an Auger transition starting from a hole in 1s levels which would be filled up from the 2p level? |
| A. | KLM transition |
| B. | KLL transition |
| C. | LMN transition |
| D. | LLM transition |
| Answer» C. LMN transition | |
| 13. |
Electron ionisation can produce ESCA electrons. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
Electron ionization can produce which of the following? |
| A. | ESCA electron |
| B. | Auger electron |
| C. | Ion |
| D. | Photon |
| Answer» C. Ion | |
| 15. |
Qualitative chemical analysis is very often performed using which of the following? |
| A. | ESCA |
| B. | SIMS |
| C. | AES |
| D. | Ion spectroscopy |
| Answer» D. Ion spectroscopy | |
| 16. |
AES is limited when it comes to very high resolution studies. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following? |
| A. | ESCA |
| B. | SIMS |
| C. | ISS |
| D. | Ion spectroscopy |
| Answer» B. SIMS | |
| 18. |
The characterisation of auger spectroscopy can be achieved up to which of the following depths? |
| A. | 1 nm |
| B. | 2 nm |
| C. | 4 nm |
| D. | 8 nm |
| Answer» B. 2 nm | |