MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 detectors can detect almost any component? |
| A. | Combining two UV detectors |
| B. | Combining RI and UV detectors |
| C. | Mass detector |
| D. | Laser-based detectors |
| Answer» C. Mass detector | |
| 2. |
Which of the following is not a feature of refractive index type detectors? |
| A. | Higher potential sensitivity |
| B. | Low cost |
| C. | High volume flow rates |
| D. | Easy cell accessibility |
| Answer» D. Easy cell accessibility | |
| 3. |
In UV-Visible detectors, the cells are not made of which of the following materials? |
| A. | Quartz |
| B. | Teflon |
| C. | Silica |
| D. | KELF |
| Answer» D. KELF | |
| 4. |
Which of the following detectors used in liquid chromatography is also called micro-adsorption detector? |
| A. | Electrochemical detectors |
| B. | Fluorescence detectors |
| C. | Refractive index detectors |
| D. | Thermal detectors |
| Answer» E. | |
| 5. |
Which of the following is true about Laser detectors used in liquid chromatography? |
| A. | Causes thermal distortion has decreased sensitivity |
| B. | Causes thermal distortion has increased sensitivity |
| C. | Does not cause thermal distortion, has decreased sensitivity |
| D. | Does not cause thermal distortion, has increased sensitivity |
| Answer» B. Causes thermal distortion has increased sensitivity | |
| 6. |
The reference cell is packed with which of the following in the Adsorption detector used in liquid chromatography? |
| A. | Inactive glass beads |
| B. | Porous glass beads |
| C. | Alumina |
| D. | Silica |
| Answer» B. Porous glass beads | |
| 7. |
Which of the following detectors can be used for detection of amino acids in protein hydrolyzates by introducing the reagent dansylchloride in the sample? |
| A. | Electrochemical detectors |
| B. | Fluorescence detectors |
| C. | Refractive index detectors |
| D. | Thermal conductivity detectors |
| Answer» C. Refractive index detectors | |
| 8. |
Refractive index detectors used in liquid chromatography are not based on which of the following processes? |
| A. | Interference |
| B. | Refraction |
| C. | Reflection |
| D. | Absorption |
| Answer» E. | |
| 9. |
Which of the following detectors depend on Snell s law at the interface between the cell wall and the flowing liquid to deflect the light beam? |
| A. | Electrochemical detectors |
| B. | Fluorescence detectors |
| C. | Refractive index detectors |
| D. | Thermal conductivity detectors |
| Answer» D. Thermal conductivity detectors | |
| 10. |
Fluorescence detection is less selective than absorption detection. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following UV absorbance detectors provide a real time spectrum of the component of interest? |
| A. | Continuous wavelength detector |
| B. | Variable wavelength detector |
| C. | Scanning wavelength detector |
| D. | Fixed wavelength detector |
| Answer» D. Fixed wavelength detector | |
| 12. |
Detector selectivity is more important in Liquid chromatography than in Gas chromatography. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following is not a property of a good detector used in liquid chromatography? |
| A. | Good sensitivity |
| B. | Ability to function in the presence of a large background signal |
| C. | Short response time |
| D. | Volume of detector must be large |
| Answer» E. | |
| 14. |
Bulk property detectors used in liquid chromatography does not respond to which of the following properties? |
| A. | Refractive index |
| B. | Density |
| C. | Properties of solutes |
| D. | Dielectric constant |
| Answer» D. Dielectric constant | |