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. |
In mass spectrometer, the sample gas is introduced into the highly evacuated spectrometer tube and it is ionised by electron beam. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following statements is not true about mass spectrometry? |
| A. | Impurities of masses different from the one being analysed interferes with the result |
| B. | It has great sensitivity |
| C. | It is suitable for data storage |
| D. | It is suitable for library retrieval |
| Answer» B. It has great sensitivity | |
| 3. |
Which of the following ions pass through the slit and reach the collecting plate? |
| A. | Negative ions of all masses |
| B. | Positive ions of all masses |
| C. | Negative ions of specific mass |
| D. | Positive ions of specific mass |
| Answer» E. | |
| 4. |
In a mass spectrometer, the ion currents are measured using which of the following? |
| A. | Scintillation counter |
| B. | Ion counter |
| C. | Electrometer tube |
| D. | Electric fields |
| Answer» D. Electric fields | |
| 5. |
The procedure for mass spectroscopy starts with which of the following processes? |
| A. | The sample is bombarded by electron beam |
| B. | The ions are separated by passing them into electric and magnetic field |
| C. | The sample is converted into gaseous state |
| D. | The ions are detected |
| Answer» D. The ions are detected | |
| 6. |
No two molecules will be fragmented and ionized in exactly the same manner. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
In mass spectrometer, the ions are sorted out in which of the following ways? |
| A. | By accelerating them through electric field |
| B. | By accelerating them through magnetic field |
| C. | By accelerating them through electric and magnetic field |
| D. | By applying a high voltage |
| Answer» D. By applying a high voltage | |
| 8. |
Mass spectrometer separates ions on the basis of which of the following? |
| A. | Mass |
| B. | Charge |
| C. | Molecular weight |
| D. | Mass to charge ratio |
| Answer» E. | |
| 9. |
In mass spectrometer, the sample that has to be analysed is bombarded with which of the following? |
| A. | Protons |
| B. | Electrons |
| C. | Neutrons |
| D. | Alpha particles |
| Answer» C. Neutrons | |
| 10. |
Who invented mass spectrometers? |
| A. | J.J Thompson |
| B. | Goldstein |
| C. | Nikola Tesla |
| D. | Aston |
| Answer» B. Goldstein | |
| 11. |
Mass spectrometers are used to determine which of the following? |
| A. | Composition in sample |
| B. | Concentration of elements in sample |
| C. | Relative mass of atoms |
| D. | Properties of sample |
| Answer» D. Properties of sample | |