MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following steps is not present in Gabriel phthalimide synthesis? |
| A. | Treating phthalimide with alcoholic KOH |
| B. | Heating potassium phthalimide with alkyl halide |
| C. | Alkaline hydrolysis of N-alkylphthalimide |
| D. | Heating phthalic acid with NaOH |
| Answer» E. | |
| 2. |
Gabriel phthalimide synthesis can be used for preparing phenylmethanamine. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following amines can be prepared from Gabriel phthalimide synthesis? |
| A. | Benzylamine |
| B. | Aniline |
| C. | o-Toluidine |
| D. | N-Methylbenzenamine |
| Answer» B. Aniline | |
| 4. |
Which of the following compounds undergoes Hoffmann bromamide degradation reaction? |
| A. | C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub> |
| B. | C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub> |
| C. | C<sub>6</sub>H<sub>5</sub>CONH<sub>2</sub> |
| D. | C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>NH<sub>2</sub> |
| Answer» D. C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>NH<sub>2</sub> | |
| 5. |
The best reagent for converting 2-phenylpropanamide to 1-phenylethanamine is ________ |
| A. | H<sub>2</sub>/Ni |
| B. | Na(Hg)/C<sub>2</sub>H<sub>5</sub>OH |
| C. | LiAlH<sub>4</sub> |
| D. | NaOH/Br<sub>2</sub> |
| Answer» E. | |
| 6. |
Hoffmann bromamide degradation reaction is used for preparing _______ amines. |
| A. | primary |
| B. | secondary |
| C. | tertiary |
| D. | mixed |
| Answer» B. secondary | |
| 7. |
Which of the following is not a by product of Hoffmann bromamide degradation of acetamide with alcoholic KOH? |
| A. | KBr |
| B. | KCN |
| C. | K<sub>2</sub>CO<sub>3</sub> |
| D. | H<sub>2</sub>O |
| Answer» C. K<sub>2</sub>CO<sub>3</sub> | |
| 8. |
Ethyldimethylamine is obtained from the reduction of _______ with LiAlH4. |
| A. | acetamide |
| B. | benzamide |
| C. | N-methylacetamide |
| D. | N,N-dimethylacetamide |
| Answer» E. | |
| 9. |
Only primary amines can be obtained from the reduction of amides with LiAlH4. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Which of the following amines cannot be formed from the reduction of amides with LiAlH4? |
| A. | Ethylamine |
| B. | Benzenamine |
| C. | Benzylamine |
| D. | Ethylmethylamine |
| Answer» C. Benzylamine | |
| 11. |
The reduction of phenyl isocyanide with H2 and Ni catalyst gives a/an _________ |
| A. | primary amine |
| B. | secondary amine |
| C. | tertiary amine |
| D. | arylalkyl amine |
| Answer» C. tertiary amine | |
| 12. |
How many more carbon atoms are present in the amine formed from the reduction of a nitrile, than in the nitrile itself? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 1 or 2 |
| Answer» B. 1 | |
| 13. |
Which of the following reagents cannot be used to convert ethanenitrile to ethylamine? |
| A. | H<sub>2</sub>/Ni |
| B. | LiAlH<sub>4</sub> |
| C. | Na(Hg), ethanol |
| D. | Sn, HCl |
| Answer» E. | |