MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Bolometer, a type of detector, is also known as ___________ |
| A. | Resistance temperature detector (RTD) |
| B. | Thermistor |
| C. | Thermocouple |
| D. | Golay cell |
| Answer» C. Thermocouple | |
| 2. |
IN_A_SOLID_SAMPLE_TREATMENT_TECHNIQUE,_THE_FINELY_GROUND_SOLID_SAMPLE_IS_MIXED_WITH_MINERAL_OIL_TO_MAKE_A_THICK_PASTE_WHICH_IS_THEN_SPREAD_BETWEEN_IR_TRANSMITTING_WINDOWS._WHAT_IS_THE_NAME_OF_THIS_SOLID_SAMPLE_TREATMENT_TECHNIQUE??$ |
| A. | Pressed pellet |
| B. | Mull technique |
| C. | Solid films |
| D. | Solids run in solution |
| Answer» C. Solid films | |
| 3. |
Which of the following is the principle of Golay cell which is used as a detector in IR spectroscopy? |
| A. | Expansion of gas upon heating |
| B. | Increase in resistance due to increase in temperature and vice versa |
| C. | Temperature difference gives rise to a potential difference in the material |
| D. | Decrease in resistance due to increase in temperature |
| Answer» B. Increase in resistance due to increase in temperature and vice versa | |
| 4. |
Which of the following is not used as pyroelectric material used in pyroelectric transducers in Infrared spectroscopy? |
| A. | Triglycine Sulphate |
| B. | Deutrated Triglycine Sulphate |
| C. | Some Polymers |
| D. | Tetraglycine sulphate |
| Answer» E. | |
| 5. |
Which of the following is not a technique for preparing solid samples in IR spectroscopy? |
| A. | Solids run in solution |
| B. | Mull technique |
| C. | Solid films |
| D. | Thin films |
| Answer» E. | |
| 6. |
Bolometer, a type of detector, is also known as: |
| A. | Resistance temperature detector (RTD) |
| B. | Thermistor |
| C. | Thermocouple |
| D. | Golay cell |
| Answer» C. Thermocouple | |
| 7. |
What is the composition of Globar rod which is used as a source in Mid IR spectroscopy? |
| A. | Silicon carbide |
| B. | Silver chloride |
| C. | Silicon dioxide |
| D. | Silver carbide |
| Answer» B. Silver chloride | |
| 8. |
Which of the following is not a composition of Nernst glower or Nernst filament? |
| A. | Oxides of Zirconium |
| B. | Oxides of Barium |
| C. | Oxides of Yitrium |
| D. | Oxides of Thorium |
| Answer» C. Oxides of Yitrium | |
| 9. |
Which of the following options are correct in terms of wavelength for the different types of IR spectrometer? |
| A. | Near IR: 0.8 – 2.5 mm |
| B. | Mid IR: 0.8 – 2.5 mm |
| C. | Far IR: 2.5 – 50 mm |
| D. | Mid IR: 50 – 100 mm |
| Answer» B. Mid IR: 0.8 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2.5 mm | |
| 10. |
Which of the following is the wave number of near infrared spectrometer? |
| A. | 4000 – 200 cm<sup>-1</sup> |
| B. | 200 – 10 cm<sup>-1</sup> |
| C. | 12500 – 4000 cm<sup>-1</sup> |
| D. | 50 – 1000 cm<sup>-1</sup> |
| Answer» D. 50 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1000 cm<sup>-1</sup> | |
| 11. |
Which of the following is not a source used in Mid Infrared Spectrophotometer? |
| A. | Nernst glower |
| B. | High pressure mercury arc lamp |
| C. | Globar |
| D. | Nichrome wire |
| Answer» C. Globar | |