MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
In the direct amination of alkyl and aryl pinacol boronates to form aromatic amine, which of the following is used as reagent with pinacol? |
| A. | Aryl boric acid |
| B. | Copper oxidec) Pd(OA |
| C. | Pd(OAc)2 |
| D. | Lithiated methoxyamine |
| Answer» E. | |
| 2. |
What will be the product for the following reaction? |
| A. | secondary aliphatic amine |
| B. | primary aromatic amine |
| C. | tertiary aromatic amine |
| D. | secondary aromatic amine |
| Answer» D. secondary aromatic amine | |
| 3. |
What is the known name of the reaction given below? |
| A. | Gabriel phthalimide synthesis |
| B. | Buchwald-Hartwig Reaction |
| C. | Chan-Lam coupling |
| D. | Ullmann reaction |
| Answer» E. | |
| 4. |
What is the known name of the reaction given below? (where, X=Cl, Br, I, OTf; R2=Alkyl, aryl, H; R3=alkyl, aryl) |
| A. | Gabriel phthalimide synthesis |
| B. | Buchwald-Hartwig Reaction |
| C. | Chan-Lam coupling |
| D. | Ullmann reaction |
| Answer» C. Chan-Lam coupling | |
| 5. |
What are A and B in the given sequence, respectively? |
| A. | Aldehyde, nitro compound |
| B. | Nitro compound, phenyl amine |
| C. | Phenyl amine, nitro compound |
| D. | Phenthalene, phenyl amine |
| Answer» C. Phenyl amine, nitro compound | |
| 6. |
IN_THE_DIRECT_AMINATION_OF_ALKYL_AND_ARYL_PINACOL_BORONATES_TO_FORM_AROMATIC_AMINE,_WHICH_OF_THE_FOLLOWING_IS_USED_AS_REAGENT_WITH_PINACOL??$ |
| A. | Aryl boric acid |
| B. | Copper oxide |
| C. | Pd(OAc)<sub>2</sub> |
| D. | Lithiated methoxyamine |
| Answer» E. | |
| 7. |
Which type medium is required for the formation of aniline by reaction of aryl boric acid and HAS? |
| A. | Acidic |
| B. | Basic aqueous |
| C. | Neutral dry |
| D. | aqueous |
| Answer» C. Neutral dry | |
| 8. |
Which reducing agent is used for the reduction of nitro compound to phenyl amine? |
| A. | LiAlH<sub>4</sub> |
| B. | Sn/HCl |
| C. | Na/alcohol |
| D. | H<sub>2</sub>/Ni |
| Answer» C. Na/alcohol | |
| 9. |
Which of the following method cannot be used for preparation of aromatic amine? |
| A. | Gabriel phthalimide synthesis |
| B. | Reduction of nitro compound |
| C. | Reduction of nitrile with LiAl4 |
| D. | Decarboxylation of amino acids |
| Answer» B. Reduction of nitro compound | |
| 10. |
Aniline is usually purified by which of the following method? |
| A. | Steam distillation |
| B. | Simple distillation |
| C. | Vacuum distillation |
| D. | Extraction with a solvent |
| Answer» B. Simple distillation | |