Reactions including nucleophilic addition oxidation reduction aldol condensation Cannizzaro and haloform reactions - Question Bank
1. Which of the following is a key step in the mechanism of the Haloform reaction for methyl ketones?
2. The reaction of a carboxylic acid derivative (like an ester or acid chloride) with a nucleophile typically involves:
3. Which reaction involves the addition of a nucleophile to the carbonyl carbon followed by the elimination of a leaving group?
4. Oxidation of a secondary alcohol produces:
5. Which of the following is a characteristic of nucleophilic addition to carbonyls regarding the electron density in the carbonyl group?
6. The reaction of an alpha,beta-unsaturated carbonyl compound with a nucleophile where the nucleophile attacks the beta-carbon is called:
7. The intermediate formed in the Cannizzaro reaction before disproportionation is:
8. Which of the following aldehydes will undergo both Cannizzaro and Aldol condensation?
9. Clemmensen reduction uses:
10. Which type of compound can be reduced to a hydrocarbon using Clemmensen reduction?
11. What are the conditions for Wolff-Kishner reduction?
12. The reduction of a ketone using Wolff-Kishner reduction yields:
13. When a methyl ketone (R-CO-CH3) reacts with iodine in the presence of a base, the product is:
14. Which reaction is used to distinguish between an aldehyde and a ketone?
15. The dehydration of the aldol product (beta-hydroxy aldehyde or ketone) leads to the formation of:
16. Which of the following is NOT a nucleophilic addition reaction to a carbonyl group?
17. The reaction of an aldehyde or ketone with HCN followed by acid hydrolysis yields:
18. In the Wittig reaction, the nucleophile is a:
19. The Wittig reaction is used to synthesize:
20. Which reagent is used to form semicarbazones from aldehydes and ketones?
21. The reaction of an aldehyde or ketone with phenylhydrazine forms a:
22. When an aldehyde reacts with hydroxylamine, what is formed?
23. Which of the following is a characteristic reaction of ketones?
24. The product of the Claisen condensation of ethyl acetate is:
25. Which reaction involves the self-condensation of an ester in the presence of a strong base?
26. Cyanohydrins are formed by the nucleophilic addition of:
27. The reaction of a Grignard reagent with an aldehyde followed by hydrolysis yields:
28. Which reagent is used for the reduction of carboxylic acids to primary alcohols?
29. Secondary alcohols are oxidized to which functional group by most oxidizing agents?
30. Strong oxidizing agents like acidified KMnO4 or K2Cr2O7 can oxidize primary alcohols to:
31. PCC is used to oxidize primary alcohols to:
32. Which type of compound is NOT oxidized by mild oxidizing agents like PCC (Pyridinium Chlorochromate)?
33. A positive Fehling's test results in the formation of a precipitate of:
34. Fehling's solution B is a solution of:
35. Fehling's solution A is a solution of:
36. Which functional group can be oxidized by Fehling's solution?
37. Tollen's reagent is an alkaline solution of:
38. What is the characteristic precipitate formed during a positive Tollen's test for aldehydes?
39. Which of the following reagents is used in the Haloform reaction?
40. The Haloform reaction is a specific test for compounds containing:
41. Which of the following aldehydes undergoes the Cannizzaro reaction?
42. In the Cannizzaro reaction, what are the products formed from an aldehyde lacking alpha-hydrogens in the presence of a concentrated base?
43. The Cannizzaro reaction is characteristic of aldehydes that:
44. In the Aldol condensation, what is the product formed from the reaction of two molecules of ethanal?
45. The Aldol condensation reaction requires the presence of:
46. Which reaction involves the reaction of an aldehyde or ketone with an alcohol in the presence of an acid catalyst to form an acetal?
47. Oxidation of a primary alcohol typically yields:
48. Which of the following reagents is commonly used for the reduction of aldehydes and ketones to primary and secondary alcohols, respectively?
49. In a nucleophilic addition reaction of a carbonyl compound, what acts as the nucleophile?
50. Which functional group is characteristic of aldehydes and ketones?