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. |
Which of the following problems occur when combining gas chromatography and mass spectroscopy? |
| A. | Difference in operating pressures |
| B. | Reduction in sensitivity |
| C. | Direct identification is not possible |
| D. | It does not permit direct introduction of the effluent |
| Answer» B. Reduction in sensitivity | |
| 2. |
Cold tray is provided for liquid N2 or CO2 but is used only for extremely small samples. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
THE_SYSTEM_FOR_MEASUREMENT_OF_ION_INTENSITY_IN_GS-MS_SYSTEM_CONSISTS_OF_WHICH_OF_THE_FOLLOWING??$ |
| A. | Band pass amplifier |
| B. | Narrow band amplifier |
| C. | Wide band amplifier |
| D. | Low pass amplifier |
| Answer» D. Low pass amplifier | |
| 4. |
The system for measurement of ion intensity in GS-MS system consists of which of the following? |
| A. | Electrometer |
| B. | Ion meter |
| C. | Ion transducer |
| D. | Intensity meter |
| Answer» B. Ion meter | |
| 5. |
Which of the following is the type of separator used in commercial GC-MS systems? |
| A. | Jet type molecular separator |
| B. | Porous tube |
| C. | Teflon tube |
| D. | Flow type separator |
| Answer» B. Porous tube | |
| 6. |
The carrier gas with low molecular weight would diffuse at a higher rate than the higher molecular weight sample. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
GC- MS has been developed for which of the following systems? |
| A. | Packed column |
| B. | Open tubular column |
| C. | Capillary column |
| D. | Porous layer column |
| Answer» B. Open tubular column | |
| 8. |
Which of the following is most often used in the chromatograph in gas chromatograph MS? |
| A. | Curvette |
| B. | Paper support |
| C. | Capillary tube |
| D. | Flask |
| Answer» D. Flask | |
| 9. |
Cold tray is provided for liquid N2 or CO2 but is used only for extremely small samples. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following is the disadvantage of gas chromatography? |
| A. | It is not a good method |
| B. | It cannot be used for qualitative analysis |
| C. | It cannot be used for separation of volatile components |
| D. | It does not provide direct identification |
| Answer» E. | |
| 11. |
Which of the following is the most sensitive of the spectral methods? |
| A. | Absorption spectroscopy |
| B. | Mass spectroscopy |
| C. | Flame emission spectroscopy |
| D. | Atomic emission spectroscopy |
| Answer» C. Flame emission spectroscopy | |