Organic halogen compounds preparation properties substitution mechanisms - One Line Questions

1. Which of the following alkyl halides will undergo SN1 reaction most readily? — 2-Chloro-2-methylpropane
2. Which of the following is an example of a vicinal dihalide? — 1,2-Dichloroethane
3. The reaction of an alkyl halide with ammonia typically leads to: — A mixture of amines
4. The reaction of a vicinal dihalide with zinc dust produces: — Alkene
5. The Williamson ether synthesis involves the reaction of: — An alkoxide ion with a primary alkyl halide
6. The Wurtz reaction involves the reaction of: — An alkyl halide with sodium metal
7. The Hoffman bromination reaction is used to convert an amide into: — An amine with one carbon less
8. In the SN1 mechanism, the rate-determining step is the: — Loss of the leaving group
9. The product of the reaction of chloroform with alcoholic KOH and heating is: — Benzaldehyde
10. Which of the following is an example of an aryl halide? — Chlorobenzene
11. Which of the following is an example of an allylic halide? — CH2=CH-CH2Br
12. Which of the following is a benzylic halide? — C6H5CH2Cl
13. The Dow process is used for the preparation of: — Phenol from chlorobenzene
14. The rate of SN1 reactions depends on: — Concentration of alkyl halide only
15. The Gattermann reaction is similar to the Sandmeyer reaction but uses: — HCN and copper powder
16. Which of the following is a characteristic reaction of alkyl halides? — Nucleophilic substitution
17. What is the product when bromoethane reacts with sodium hydroxide solution? — Ethanol
18. The product of the reaction between 1,1-dichloroethane and aqueous KOH is: — Acetaldehyde
19. The reaction of ethyl iodide with silver acetate yields: — Ethyl acetate
20. Which of the following is a characteristic feature of SN2 reactions? — Bimolecular rate-determining step
21. The reaction of an alkyl halide with magnesium in dry ether produces: — Grignard reagent
22. Which of the following is NOT a method for preparing alkyl halides? — Hydrolysis of esters
23. The Sandmeyer reaction is used to introduce which functional group onto an aromatic ring? — Halogen (-Cl, -Br)
24. The rate of SN2 reaction is increased by: — Using a good leaving group
25. Which of the following is a characteristic of SN1 reactions? — Proceeds via a carbocation intermediate
26. The reaction of an alkene with HBr in the presence of peroxides follows which rule? — Anti-Markovnikov's rule (Peroxide effect)
27. The addition of HBr to propene in the presence of peroxides follows: — Anti-Markovnikov's rule
28. When an alkyl halide reacts with silver nitrite (AgNO2), the main product is: — Alkyl nitrite
29. The reaction of an alkyl halide with sodium ethoxide in ethanol is an example of which type of reaction? — Elimination (E2)
30. Which reagent is used to convert primary alcohols to primary alkyl chlorides? — All of the above
31. The reaction of chlorobenzene with sodium hydroxide in the presence of cuprous oxide at high temperature and pressure yields: — Phenol
32. Which of the following solvents favors SN1 reactions? —
33. The relative order of reactivity of alkyl halides towards SN2 reactions is: — Primary > Secondary > Tertiary
34. Which of the following is the most reactive alkyl halide towards SN2 reactions? — Primary alkyl halide
35. Which type of halide is least reactive towards nucleophilic substitution? — Vinyl halide
36. Which of the following conditions favors SN1 reactions over SN2 reactions? — Tertiary alkyl halide, polar aprotic solvent
37. Carbylamine reaction is used to test for the presence of: — Primary amines
38. Which of the following is the most stable carbocation intermediate in SN1 reactions? — Tertiary carbocation
39. The SN2 reaction proceeds with: — Inversion of configuration
40. The conversion of aryl halides to phenols is carried out by: — Reaction with NaOH under high pressure and temperature
41. Which of the following is a method for preparing alkyl bromides from alcohols? — All of the above
42. In SN2 reactions, the nucleophile attacks from the backside, leading to: — Inversion of configuration
43. Which of the following is the most common method for the industrial preparation of chlorobenzene? — Direct chlorination of benzene
44. Which mechanism involves a concerted, one-step process? — SN2
45. Which reagent is commonly used to convert a carboxylic acid into an acyl chloride? — All of the above
46. Which of the following reagents can convert phenol to chlorobenzene? — PCl5
47. Finkelstein reaction is used to prepare alkyl iodides from alkyl chlorides or bromides using which reagent? — Sodium iodide in acetone
48. The reaction of an alkyl halide with alcoholic KOH leads to: — Elimination
49. Which of the following is the most important factor determining the reactivity of an alkyl halide in nucleophilic substitution? — The strength of the C-X bond
50. Which of the following statements about SN2 reactions is INCORRECT? — They are favored by polar protic solvents.
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