MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
Gas burden from conventional LC flow rates is which of the following? |
| A. | 1ml/min of water produces 1.2 l/mm of gas |
| B. | 1ml/min of water produces 2.4 l/mm of gas |
| C. | 2ml/min of water produces 3.2 l/mm of gas |
| D. | 1ml/min of water produces 4.2 l/mm of gas |
| Answer» B. 1ml/min of water produces 2.4 l/mm of gas | |
| 2. |
Using an interface would reduce detection limit and sensitivity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following should be in a position to split the effluent? |
| A. | Interface |
| B. | Ion source |
| C. | Makeup gas |
| D. | Microbore |
| Answer» B. Ion source | |
| 4. |
USING_AN_INTERFACE_WOULD_REDUCE_DETECTION_LIMIT_AND_SENSITIVITY.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Gas_burden_from_conventional_LC_flow_rates_is_which_of_the_following?$ |
| A. | 1ml/min of water produces 1.2 l/mm of gas |
| B. | 1ml/min of water produces 2.4 l/mm of gas |
| C. | 2ml/min of water produces 3.2 l/mm of gas |
| D. | 1ml/min of water produces 4.2 l/mm of gas |
| Answer» B. 1ml/min of water produces 2.4 l/mm of gas | |
| 6. |
The ions are passed into the high vacuum analyser through which of the following? |
| A. | Orifice |
| B. | Nozzle |
| C. | Nebulizer |
| D. | Venturi tube |
| Answer» B. Nozzle | |
| 7. |
The ions are focussed and de-clustered through which of the following regions? |
| A. | Dry helium region |
| B. | Wet oxygen region |
| C. | Wet chlorine region |
| D. | Dry nitrogen region |
| Answer» E. | |
| 8. |
Which of the following is the normal nebuliser temperature used in LC mass spectrometry? |
| A. | 50-100<sup>o</sup>C |
| B. | 100-200<sup>o</sup>C |
| C. | 125-150<sup>o</sup>C |
| D. | 150-200<sup>o</sup>C |
| Answer» D. 150-200<sup>o</sup>C | |
| 9. |
Only ______ percent of the effluent of the liquid chromatography must be introduced in the mass spectrometer. |
| A. | 1-2 |
| B. | 1-5 |
| C. | 1-20 |
| D. | 1-15 |
| Answer» C. 1-20 | |
| 10. |
Which of the following is the most commonly used interface? |
| A. | Nebulizer |
| B. | Chopper |
| C. | Filter |
| D. | Vapourising chamber |
| Answer» B. Chopper | |
| 11. |
Which of the following should be in position to split the effluent? |
| A. | Interface |
| B. | Ion source |
| C. | Makeup gas |
| D. | Microbore |
| Answer» B. Ion source | |
| 12. |
The gas burden from conventional LC flow rates creates nearly _____ times more gas than cryo-pumped vacuum system can handle. |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 40 |
| Answer» D. 40 | |
| 13. |
Introduction of total HPLC effluent into MS is feasible. |
| A. | True |
| B. | False |
| Answer» C. | |