MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
IN_HOW_MANY_WAYS_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®CH3_PROTONS_CAN_COUPLE_WITH_THE_PROTONS_ON_ADJACENT_CARBON_ATOM_RELATIVE_TO_THE_EXTERNAL_FIELD.?$# |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2. |
Which_of_the_following_is_inversely_proportional_to_the_chemical_shifts_positions_(δ)?$# |
| A. | Frequency of unknown group of protons |
| B. | Frequency of TMS |
| C. | Operating frequency of the instrument |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 3. |
For NMR spectrum, carbon tetrachloride and water can be successfully used as a solvent? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The number of signals in 1-propanol are _________ while those in 2-propanol are ______ |
| A. | 4, 3 |
| B. | 4, 2 |
| C. | 2, 4 |
| D. | 3, 4 |
| Answer» B. 4, 2 | |
| 5. |
The NMR spectra of the functional isomers of the molecular formula C2H6O show _________ and _________ signals respectively. |
| A. | 1, 2 |
| B. | 1, 3 |
| C. | 1, 4 |
| D. | 1, 5 |
| Answer» C. 1, 4 | |
| 6. |
Propene as well as 2-Butene(cis) will show equal number of signals in their NMR spectra. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Number of NMR signals obtained in CH3COCH3 will be |
| A. | 6 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 8. |
The number of different orientations which a magnetic nucleus can take is |
| A. | 2I |
| B. | 2I-1 |
| C. | 2I+1 |
| D. | 4I |
| Answer» D. 4I | |
| 9. |
The nuclei with a spin quantum number greater than _______ can exhibit the NMR phenomenon. |
| A. | 0 |
| B. | 5 |
| C. | 10 |
| D. | -5 |
| Answer» B. 5 | |