MCQOPTIONS
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MCQOPTIONS
This section includes 6 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. |
When a value of q is kept constant, the value of m/e is proportional to which of the following when m is the mass number, e is the electric charge, u is the DC potential, v is the peak amplitude and f is the frequency? |
| A. | u/v ratio |
| B. | u |
| C. | v |
| D. | f |
| Answer» D. f | |
| 2. |
In quadrupole mass spectrometer, the ratio u/v is mass dependent, where u is the DC voltage and v is the peak amplitude. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which of the following is used to cool the ion source? |
| A. | Liquid sodium shield |
| B. | Liquid nitrogen shield |
| C. | Water |
| D. | Freon |
| Answer» C. Water | |
| 4. |
In pyrolysis spectrometry, heating is done until which of the following is reached? |
| A. | Curie point |
| B. | Boiling point |
| C. | Until production of superheated vapour |
| D. | Until 100<sup>o</sup>C |
| Answer» B. Boiling point | |
| 5. |
In cases where differentiation is required between very similar substances, which of the following techniques making use of quadrupole principle is preferred? |
| A. | Evaporation mass spectrometry |
| B. | Pyrolysis mass spectrometry |
| C. | Plasma mass spectrometry |
| D. | Trapped ion mass spectrometry |
| Answer» C. Plasma mass spectrometry | |
| 6. |
Which of the following does not affect the resolution of the instrument? |
| A. | Changing length of electrode |
| B. | Changing slope of scan line |
| C. | Quality of machining of the rods |
| D. | Changing length of drift tube |
| Answer» E. | |