MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which type of catalytic reaction, does Dienone phenol rearrangement reaction belong? |
| A. | Acid catalysed |
| B. | Base catalysed |
| C. | Acidic |
| D. | Neutral |
| Answer» B. Base catalysed | |
| 2. |
Which medium is used in benzylic acid rearrangement reaction? |
| A. | Neutral |
| B. | Strong basic |
| C. | Mild acidic |
| D. | Strong acidic |
| Answer» C. Mild acidic | |
| 3. |
The benzylic acid rearrangement reaction of a cyclic diketone leads to _______ |
| A. | Ring expansion |
| B. | Ring contraction |
| C. | Ring fusion |
| D. | Isomers |
| Answer» C. Ring fusion | |
| 4. |
Which Intermediate is formed in Wolff’s reaction? |
| A. | Carbene |
| B. | Ketene |
| C. | Carbocation |
| D. | Carbanion |
| Answer» C. Carbocation | |
| 5. |
With accompanying 1, 2-rearrangement in wolff rearrangement, an α-diazocarbonyl compound is converted into a ketene by loss of which of the following compound? |
| A. | Dioxygen |
| B. | Dinitrogen |
| C. | Disulphur |
| D. | Ammonia |
| Answer» C. Disulphur | |
| 6. |
WHICH_MEDIUM_IS_USED_IN_BENZYLIC_ACID_REARRANGEMENT_REACTION??$ |
| A. | Neutral |
| B. | Strong basic |
| C. | Mild acidic |
| D. | Strong acidic |
| Answer» C. Mild acidic | |
| 7. |
Which type of catalytic reaction, does Dienone phenol rearrangement reaction belong?$ |
| A. | Acid catalysed |
| B. | Base catalysed |
| C. | Acidic |
| D. | Neutral |
| Answer» B. Base catalysed | |
| 8. |
The benzylic acid rearrangement reaction of a cyclic diketone leads to ______? |
| A. | Ring expansion |
| B. | Ring contraction |
| C. | Ring fusion |
| D. | Isomers |
| Answer» C. Ring fusion | |
| 9. |
In which medium Favorskii rearrangement occurs? |
| A. | Acidic |
| B. | Basic |
| C. | Neutral |
| D. | Alkaline |
| Answer» C. Neutral | |
| 10. |
Which intermediate carbocation is more stable in pinacole -pinacolone rearrangement? |
| A. | 1<sup>o</sup> |
| B. | 2<sup>o</sup> |
| C. | 3<sup>o</sup> |
| D. | 4<sup>o</sup> |
| Answer» D. 4<sup>o</sup> | |
| 11. |
Which was the first molecular rearrangement identified as such by early chemists? |
| A. | Wolff’s rearrangement |
| B. | Pinacole rearrangement |
| C. | Favorskii rearrangement |
| D. | Hofmann rearrangement |
| Answer» B. Pinacole rearrangement | |
| 12. |
Which Intermediate is formed in Wolff’s reaction?$ |
| A. | Carbene |
| B. | Ketene |
| C. | Carbocation |
| D. | Carbanion |
| Answer» B. Ketene | |
| 13. |
With accompanying 1, 2-rearrangement in wolff rearrangement, an α-diazocarbonyl compound is converted into a ketene by loss of which of the following compound?$ |
| A. | Dioxygen |
| B. | Dinitrogen |
| C. | Disulphur |
| D. | Ammonia |
| Answer» C. Disulphur | |
| 14. |
What is the main difference between Hofmann and Curtius rearrangement? |
| A. | Products are different |
| B. | Intermediate formed is different |
| C. | Reactants are different |
| D. | Isomers |
| Answer» B. Intermediate formed is different | |
| 15. |
Which types of isomers are formed in rearrangement reactions? |
| A. | structural isomers |
| B. | Geometrical isomers |
| C. | Optical isomer |
| D. | Conformational isomers |
| Answer» B. Geometrical isomers | |