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 would not be a good choice for reducing an aryl nitro compound to an amine? |
| A. | H<sub>2</sub>/Pt |
| B. | LiAlH<sub>4</sub>-ether |
| C. | Fe and HCl |
| D. | Sn and HCl |
| Answer» C. Fe and HCl | |
| 2. |
Only primary amine is formed as the main product when ammonolysis of an alkyl halide takes place with large excess of ammonia. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Ammonolysis is a reaction between an alkyl halide and most preferably an ______ solution of NH3. |
| A. | alkaline |
| B. | acidic |
| C. | alcoholic |
| D. | aqueous |
| Answer» D. aqueous | |
| 4. |
What is the correct order of reactivity of the following alkyl halides towards ammonolysis reaction? |
| A. | CH<sub>3</sub>I > CH<sub>3</sub>Br > CH<sub>3</sub>Cl |
| B. | CH<sub>3</sub>I > CH<sub>3</sub>Cl > CH<sub>3</sub>Br |
| C. | CH<sub>3</sub>Cl > CH<sub>3</sub>Br > CH<sub>3</sub>I |
| D. | CH<sub>3</sub>Br > CH<sub>3</sub>Cl > CH<sub>3</sub>I |
| Answer» B. CH<sub>3</sub>I > CH<sub>3</sub>Cl > CH<sub>3</sub>Br | |
| 5. |
The main product formed when the ammonolysis is carried out using excess of iodoethane is _______ |
| A. | 1 amine |
| B. | 2 amine |
| C. | 3 amine |
| D. | quaternary ammonium salt |
| Answer» E. | |
| 6. |
Aniline can be formed from the ammonolysis of chlorobenzene. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
What is the most suitable condition for the ammonolysis of an alkyl halide? |
| A. | 273K, open tube |
| B. | 273K, sealed tube |
| C. | 373K, open tube |
| D. | 373K, sealed tube |
| Answer» E. | |
| 8. |
What is the type of amine obtained from the ammonolysis of alkyl halides? |
| A. | Primary |
| B. | Primary and secondary |
| C. | Secondary and tertiary |
| D. | Primary, secondary and tertiary |
| Answer» D. Primary, secondary and tertiary | |
| 9. |
Ammonolysis is a type of _________ reaction. |
| A. | electrophilic addition |
| B. | electrophilic substitution |
| C. | nucleophilic addition |
| D. | nucleophilic substitution |
| Answer» E. | |
| 10. |
How many water molecules are formed as the by product of reduction of one molecule of nitropropane to one molecule of propanamine, with hydrogen gas in Pt catalyst? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 11. |
What compound is formed when hydrogen gas is passed through nitrobenzene in the presence of finely divided nickel? |
| A. | Aniline |
| B. | 2-Nitroaniline |
| C. | 3-Nitroaniline |
| D. | 4-Nitroaniline |
| Answer» B. 2-Nitroaniline | |
| 12. |
Which of the following reagents cannot be used to convert nitrobenzene to aniline? |
| A. | LiAlH<sub>4</sub>-dry ether |
| B. | SnCl<sub>2</sub>/HCl |
| C. | H<sub>2</sub>/Pd-ethanol |
| D. | Zn in HCl |
| Answer» B. SnCl<sub>2</sub>/HCl | |
| 13. |
Which of the following is the most preferred reagent for reducing nitroethane to ethylamine? |
| A. | H<sub>2</sub>/Pt |
| B. | Sn/HCl |
| C. | Fe/HCl |
| D. | Zn/HCl |
| Answer» D. Zn/HCl | |