MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 of the following catalyst can be used in the synthesis of pyridine by Bönnemann cyclization? |
| A. | Vanadium oxide |
| B. | Nickel based catalyst |
| C. | Silver or platinum-based catalyst |
| D. | Cobalt catalyst |
| Answer» E. | |
| 2. |
What is the name reaction of the following reaction? |
| A. | Chichibabin synthesis |
| B. | Dealkylation of alkylpyridines |
| C. | Hantzsch pyridine synthesis |
| D. | Bönnemann cyclization |
| Answer» D. Bönnemann cyclization | |
| 3. |
Which of the following reagent can’t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis? |
| A. | Vanadium oxide |
| B. | Nickel based catalyst |
| C. | Silver or platinum-based catalyst |
| D. | Copper catalyst |
| Answer» E. | |
| 4. |
What is the name of the reaction given below when condensation of acrolein and acetaldehyde take place? |
| A. | Chichibabin synthesis |
| B. | Dealkylation of alkylpyridine |
| C. | Hantzsch pyridine synthesis |
| D. | Bonnemann cyclisation |
| Answer» B. Dealkylation of alkylpyridine | |
| 5. |
Which of the following catalyst can be used in the synthesis of pyridine by Bönnemann cyclization?$# |
| A. | Vanadium oxide |
| B. | Nickel based catalyst |
| C. | Silver or platinum-based catalyst |
| D. | Cobalt catalyst |
| Answer» E. | |
| 6. |
Which of the following reagent can’t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis?# |
| A. | Vanadium oxide |
| B. | Nickel based catalyst |
| C. | Silver or platinum-based catalyst |
| D. | Copper catalyst |
| Answer» E. | |
| 7. |
In the synthesis of pyridine by Chichibabin synthesis, synthesis of acroloien is done which method? |
| A. | Knoevenagel Condensation |
| B. | Aldol condensation |
| C. | Dieckmann condensation |
| D. | Claisen condensation |
| Answer» B. Aldol condensation | |
| 8. |
Which of the following derivative of pyridine is mostly found in mammals? |
| A. | Nicotinamide |
| B. | Vitamin B6 |
| C. | Nicotinic acid |
| D. | Strychnine |
| Answer» D. Strychnine | |
| 9. |
Mycobacterium tuberculosis and Escherichia coli produce nicotinic acid by condensation of which of the following compounds? |
| A. | Glyceraldehyde 3-phosphate |
| B. | Amino acid |
| C. | Pyrrole |
| D. | acetylene |
| Answer» D. acetylene | |
| 10. |
Which of the following derivative of pyridine is mostly found in mycobacterium tuberculosis? |
| A. | Niacin |
| B. | Nicotinamide |
| C. | Nicotinic acid |
| D. | Strychnine |
| Answer» D. Strychnine | |
| 11. |
Why is extraction of pyridine from coal tar or as a byproduct of coal gasification ineffective? |
| A. | Less concentration of desired compound |
| B. | This method is expensive |
| C. | Reactive is rare |
| D. | Dangerous procedure |
| Answer» B. This method is expensive | |
| 12. |
Which of the following plant is the natural source of pyridine? |
| A. | Atropa belladonna |
| B. | Ocimum tenuiflorum |
| C. | Azadirachta indica |
| D. | Ficus religiose |
| Answer» B. Ocimum tenuiflorum | |