MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Spectroscopy deals with the transition that a molecule undergoes on the absorption of suitable radiations determined by quantum mechanical selection rules. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The necessary condition for absorption spectrum is that __________ |
| A. | hν should be greater than the energy difference |
| B. | hν should be smaller than the energy difference |
| C. | hν should be equal to the energy difference |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
The spectra can be broadly classified into two categories. They are __________ |
| A. | Atomic and molecular spectra |
| B. | Atomic and electronic spectra |
| C. | Molecular and electronic spectra |
| D. | None of the mentioned |
| Answer» B. Atomic and electronic spectra | |
| 4. |
The energy of a photon is given by __________ |
| A. | h/ν |
| B. | ν/h |
| C. | 1/hν |
| D. | hν |
| Answer» E. | |
| 5. |
Absorption spectrum results when an electron in an atom undergoes a transition from __________ |
| A. | Higher energy level to a lower one |
| B. | Lower energy level to a higher one |
| C. | Intermediate levels |
| D. | All of the mentioned |
| Answer» C. Intermediate levels | |
| 6. |
The energy level with lower energy is called __________ |
| A. | Ground state energy level |
| B. | Initial state energy level |
| C. | Excited state energy level |
| D. | All of the mentioned |
| Answer» B. Initial state energy level | |
| 7. |
The analysis of electromagnetic radiation scattered, absorbed or emitted by the molecule is called __________ |
| A. | Kaleidoscopy |
| B. | Astronomy |
| C. | Spectroscopy |
| D. | Anatomy |
| Answer» D. Anatomy | |
| 8. |
THE_NECESSARY_CONDITION_FOR_ABSORPTION_SPECTRUM_IS_THAT?$ |
| A. | hν should be greater than the energy difference |
| B. | hν should be smaller than the energy difference |
| C. | hν should be equal to the energy difference |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Spectroscopy_deals_with_the_transition_that_a_molecule_undergoes_on_the_absorption_of_suitable_radiations_determined_by_quantum_mechanical_selection_rules.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Select the correct statement from the following options? |
| A. | Molecular spectra arises from the transition of an electron between the molecular energy levels |
| B. | In molecular transitions, electronic, rotational and vibration transitions occurs |
| C. | Molecular spectra is more complicated than atomic spectra |
| D. | All of the mentioned |
| Answer» E. | |
| 11. |
In atomic spectroscopy, only electronic transitions are involved. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
The spectra can be broadly classified into two categories. They are |
| A. | Atomic and molecular spectra |
| B. | Atomic and electronic spectra |
| C. | Molecular and electronic spectra |
| D. | None of the mentioned |
| Answer» B. Atomic and electronic spectra | |
| 13. |
The energy of a photon is given by |
| A. | h/ν |
| B. | ν/h |
| C. | 1/hν |
| D. | hν |
| Answer» E. | |
| 14. |
Absorption spectrum results when an electron in an atom undergoes a transition from |
| A. | Higher energy level to a lower one |
| B. | Lower energy level to a higher one |
| C. | Intermediate levels |
| D. | All of the mentioned |
| Answer» C. Intermediate levels | |
| 15. |
The energy level with lower energy is called |
| A. | Ground state energy level |
| B. | Initial state energy level |
| C. | Excited state energy level |
| D. | All of the mentioned |
| Answer» B. Initial state energy level | |
| 16. |
The analysis of electromagnetic radiation scattered, absorbed or emitted by the molecule is called |
| A. | Kaleidoscopy |
| B. | Astronomy |
| C. | Spectroscopy |
| D. | Anatomy |
| Answer» D. Anatomy | |