MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 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. |
Elementary particles such as electrons and nucleus have the property of spin. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Chemical shift allows a chemist to obtain the idea of how atoms are joined together. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The difference between the field necessary for resonance in the sample and in some arbitrary a chosen compound is which of the following? |
| A. | Field shift |
| B. | Matrix effects |
| C. | Chemical shift |
| D. | Resonance shift |
| Answer» D. Resonance shift | |
| 4. |
If the number of protons or neutrons is even the spin of the nucleus will be which of the following? |
| A. | Integral spin |
| B. | Half integral spin |
| C. | Zero spin |
| D. | Positive spin |
| Answer» D. Positive spin | |
| 5. |
Nuclei having either the number of protons or neutrons as odd have _______ spin. |
| A. | Integral spin |
| B. | Half integral spin |
| C. | Zero spin |
| D. | Positive spin |
| Answer» C. Zero spin | |
| 6. |
The amount of energy available in radio frequency radiation is sufficient for which of the following? |
| A. | Excite an atom |
| B. | Vibrate an atom |
| C. | Vibrate a molecule |
| D. | Affect the nuclear spin of an atom |
| Answer» E. | |
| 7. |
Which of the following are considered to be the lowest form of Electromagnetic radiation? |
| A. | IR radiation |
| B. | Micro waves |
| C. | UV radiation |
| D. | Radio waves |
| Answer» E. | |
| 8. |
When energy is absorbed by the sample, the absorption can be observed as a change in signal developed by which of the following components? |
| A. | Amplifier |
| B. | Photodetector |
| C. | GM counter |
| D. | Radiofrequency detector |
| Answer» E. | |
| 9. |
Interaction between matter and electromagnetic radiation can be observed by subjecting a substance to magnetic fields in which of the following manner? |
| A. | Both fields should be stationary |
| B. | Both fields should be varying |
| C. | One field should be stationary and the other should be varying |
| D. | It must be subjected to only one field |
| Answer» D. It must be subjected to only one field | |
| 10. |
In NMR spectroscopy, the spinning nuclei in a strong magnetic field must be irradiated by which of the following? |
| A. | Perpendicular and stronger field |
| B. | Perpendicular and weaker field |
| C. | Parallel and stronger field |
| D. | Parallel and weaker field |
| Answer» C. Parallel and stronger field | |
| 11. |
NMR spectroscopy indicates the chemical nature of the __________ and spatial positions of _______ |
| A. | Electrons, Protons |
| B. | Neutrons, electrons |
| C. | Nuclei, electrons |
| D. | Nuclei, neighbouring nuclei |
| Answer» E. | |
| 12. |
NMR spectrometer provides ____________ and _____________ method of determining structure in soluble chemical compounds. |
| A. | Accurate, destructive |
| B. | Accurate, non-destructive |
| C. | Inaccurate, destructive |
| D. | Inaccurate, non-destructive |
| Answer» C. Inaccurate, destructive | |
| 13. |
NMR is the study of the absorption of __________ by nuclei in a magnetic field. |
| A. | Radioactive radiation |
| B. | IR radiation |
| C. | Radio frequency radiation |
| D. | Microwaves |
| Answer» D. Microwaves | |
| 14. |
NMR spectroscopy is used for determining structure in which of the following materials? |
| A. | Radioactive materials |
| B. | Insoluble chemical compounds |
| C. | Liquids |
| D. | Gases |
| Answer» D. Gases | |