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Organic Chemistry Practice Test: Heterocyclic Compounds
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Heterocyclic Compounds topics include: Five membered rings, structure and source of pyridine compounds, electrophilic and nucleophilc substitution in pyridine. A heterocyclic compound is a cyclic compound that contains atoms from at least two different elements in its ring. The word "hetero" means not identical, indicating that the cyclic compound's structure has molecules that are not the same.  The ring structure of a heterocyclic compound contains carbon and other elements, such as oxygen, nitrogen, and sulfur. The simplest five-membered heterocyclic compounds are pyrrole, furan, and... Show more
Organic Chemistry Practice Test: Heterocyclic Compounds
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25 Questions

1. Pyridine come under which category of heterocycle classification on the basis of chemical behavior?
2. What is the product when pyrrole reacts with Br2 in ethanol?
3. Why is extraction of pyridine from coal tar or as a byproduct of coal gasification ineffective?
4. Which of the following is the product for the below reaction?
organic-chemistry-assessment-questions-answers-q4
5. Which element is present as hetero atom in pyridine?
6. How many number of resonating structure stabilises a pyridine molecule?
7. Pyridine undergoes nucleophilic substitution with NaNH2 at 100℃ to give which of the following?
8. Which of the following is the product for the below reaction?
organic-chemistry-assessment-questions-answers-q10
9. Which of the following is the product for the below reaction?
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10. Mycobacterium tuberculosis and Escherichia coli produce nicotinic acid by condensation of which of the following compounds?
11. What is the reactivity order in the following five membered heterocyclic compounds?
12. Nucleophilic substitution reaction of pyridine is most effective in which of the conditions?
13. Which of the following is not true about the five membered rings?
14. Pyridine is a not a planner compound?
15. What is the name reaction of the following reaction?
organic-chemistry-questions-answers-source-pyridine-compounds-q12
16. Which of the following is the correct range for the bond length in the pyridine molecule?
17. What is the name reaction of the following reaction?
organic-chemistry-questions-answers-source-pyridine-compounds-q10
18. Pyridine undergoes nucleophilic substitution with excess of NaNH2 at 100℃ to give which of the following?
19. What is the name of the reaction given below when condensation of acrolein and acetaldehyde take place?
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20. What will be the product of the following reaction?
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21. When Lithiumtetrahydroborate in the presence of water reacts with pyridine, which product is formed?
22. What is name of the reaction when piperdine is converted by pyridine commercially?
23. Pyridine undergoes nucleophilic substitution with phenyl lithium at 100℃ to give which of the following?
24. What is the product when thiophene reacts with Br2 in benzene?
25. What is the name of the following reaction?
organic-chemistry-questions-answers-nucleophilic-substitution-pyridine-q7