HALOALKANES AND HALOARENES 0% 0 Halogens and Haloarenes 1 / 78 1. Which acid is used in the dehydration of alcohols to yield alkyl halides? A) Hydrochloric acid B) Phosphoric acid C) Sulfuric acid D) Acetic acid 2 / 78 2. The common name for CH2​=CHCl is: A) Vinyl chloride B) Chloroethene C) Allyl chloride D) Ethylene chloride 3 / 78 3. The compound in structure (vi) would be named as: A) 1-Bromo-3-ene B) 3-Bromo-1-ene C) 1-Bromo-2-ene D) 2-Bromo-1-ene 4 / 78 4. In the provided example, how many possible monochloro structural isomers can be formed from the free radical chlorination of CH3CH2CH2CH3? A) Three B) One C) Four D) Two 5 / 78 5. An alkyl halide is classified as primary (1°) when the halogen is attached to: A) A carbon atom that is bonded to three other carbon atoms B) A carbon atom that is bonded to two other carbon atoms C) A carbon atom that is bonded to one other carbon atom D) A carbon atom that is bonded to no other carbon atoms 6 / 78 6. The trend in bond enthalpies for carbon-halogen bonds as you go from fluorine to iodine generally shows that they: A) Increase then decrease B) Decrease C) Stay the same D) Increase 7 / 78 7. Which reagent is commonly used for converting alcohols directly into alkyl chlorides? A) SOCl₂ B) NaBr + H₂SO₄ C) ZnCl₂ D) PCl₅ 8 / 78 8. Based on Table 6.2 (in previous question), what is the dipole moment of the carbon-bromine bond? A) 1.847 Debye B) 1.860 Debye C) 1.830 Debye D) 1.636 Debye 9 / 78 9. Which of the following compounds is an example of an aryl halide (haloarene)? A) Thyroxine B) Halothane C) Chloramphenicol D) Chloroquine 10 / 78 10. What deficiency disease is caused by the lack of thyroxine hormone in the body? A) Goiter B) Malaria C) Surgery D) Typhoid fever 11 / 78 11. If a compound has a halogen atom bonded to a carbon atom that is part of a carbon-carbon double bond, it is classified as: A) A vinylic halide B) A benzylic halide C) An allylic halide D) An aryl halide 12 / 78 12. Which alkyl halide bond would you expect to be the most polar? A) C-Br B) C-Cl C) C-F D) C-I 13 / 78 13. In allylic halides, the halogen is attached to a carbon that is: A) Part of a carbon-carbon double bond B) Not adjacent to any double bonds C) Adjacent to a carbon-carbon double bond D) Adjacent to a carbon-carbon triple bond 14 / 78 14. The general formula for alkyl halides is represented by: A) C <sub>n</sub>H<sub>2n</sub>​ X B) C <sub>n</sub>H<sub>n+1</sub>​ X C) C <sub>n</sub>H<sub>2n+2</sub>​ X D) C <sub>n</sub>H<sub>2n+1</sub>​ X 15 / 78 15. What is the IUPAC name for the compound with the common name m-Dibromobenzene? A) 1,3-Dibromobenzene B) 1,5-Dibromobenzene C) 1,4-Dibromobenzene D) 1,2-Dibromobenzene 16 / 78 16. Which synthetic halogen compound is primarily used for the treatment of malaria? A) Halothane B) Chloroquine C) Thyroxine D) Chloramphenicol 17 / 78 17. Alkyl halides, also known as haloalkanes, are characterized by a halogen atom bonded to: A) A vinyl group B) An alkoxy group C) An aromatic ring D) An alkyl group 18 / 78 18. The hydroxyl group of an alcohol is replaced by a halogen when reacting with: A) Water B) Sodium hydroxide C) Sodium chloride D) Hydrochloric acid 19 / 78 19. Vinylic halides are characterized by the halogen atom being bonded to: A) An sp2-hybridized carbon atom of an aromatic ring B) An sp-hybridized carbon atom C) An sp2-hybridized carbon atom of a carbon-carbon double bond D) An sp3-hybridized carbon atom of a carbon-carbon single bond 20 / 78 20. Which statement correctly describes the difference between allylic and benzylic halides? A) Allylic halides have the halogen on a carbon adjacent to a double bond, while benzylic halides have the halogen on a carbon attached to an aromatic ring. B) There is no difference; they are both the same. C) Allylic halides have the halogen on an aromatic ring, while benzylic halides have the halogen on a carbon-carbon double bond. D) Allylic halides have the halogen on a carbon-carbon triple bond, while benzylic halides have the halogen on a carbon-carbon single bond. 21 / 78 21. Which of the following is the correct IUPAC name for CH3CH2CH2BrCH3​CH2​CH2​Br? A) n-Propyl bromide B) 1-Bromobutane C) 1-Bromopropane D) Bromopropane 22 / 78 22. According to the IUPAC nomenclature, what do the numbers 1, 2, 1', and 3' represent in dihalogen derivatives? A) The carbon atoms to which the halogens are attached B) The priority of the halogen atoms C) The order in which the carbon atoms are counted D) The total number of carbon and halogen atoms 23 / 78 23. When propane reacts with hydrogen chloride, the major product is: A) 1-Chloropropane B) 2,3-Dichloropropane C) 2-Chloropropane D) 2-Chloropropane 24 / 78 24. In the IUPAC system of nomenclature for alkyl halides, the names are based on: A) The halosubstituted hydrocarbons B) The alphabetical order of the substituents C) The common name of the alkyl group followed by the halide D) The length of the carbon chain only 25 / 78 25. What is the clinical application of chloramphenicol? A) Treatment of typhoid fever B) Treatment of goiter C) Blood substitute in surgery D) Treatment of malaria 26 / 78 26. The reaction of alcohols with thionyl chloride (SOCl₂) produces: A) Alkyl chloride, phosphorus pentachloride, and water B) Alkyl chloride, sulfur trioxide, and hydrogen chloride C) Alkyl chloride, sulfur dioxide, and hydrogen chloride D) Alkyl chloride, sulfur dioxide, and water 27 / 78 27. Fully fluorinated compounds are considered potential substitutes for what in surgery? A) Solvents B) Blood C) Antibiotics D) Anesthesia 28 / 78 28. The term "polyhalogen" refers to compounds with: A) Exactly two halogen atoms B) Three or more halogen atoms C) One halogen atom D) A halogen atom in a ring structure 29 / 78 29. In alkyl halides (haloalkanes), halogen atoms are attached to which type of carbon atom? A) sp4 hybridized B) sp hybridized C) sp2 hybridized D) sp3 hybridized 30 / 78 30. Which of the following is the correct IUPAC name for CH3CH2CHBr2​? A) 1,3-Dibromopropane B) 1,2-Dibromopropane C) 1,1-Dibromopropane D) 2,2-Dibromopropane 31 / 78 31. If a halogen is bonded to an sp3-hybridized carbon that is connected to one other carbon atom, and that carbon is directly attached to an aromatic ring, the halide is: A) A primary (1°) allylic halide B) A primary (1°) benzylic halide C) A tertiary (3°) benzylic halide D) A secondary (2°) benzylic halide 32 / 78 32. The classification of mono-, di-, or polyhalogen compounds depends on A) The number of halogen atoms in the compound B) The number of oxygen atoms in the compound C) The number of carbon atoms in the compound D) The number of nitrogen atoms in the compound 33 / 78 33. When preparing alkyl iodides from alcohols, what is typically used? A) Concentrated sulfuric acid B) Red phosphorus and iodine C) Red phosphorus and bromine D) Concentrated hydrochloric acid 34 / 78 34. Which of the following is NOT a correct representation of a dihalo compound? A) C<sub>2</sub>​H<sub>3</sub>​X B) CHX-CH<sub>2</sub>X C) CHX-CHX D) CH<sub>2</sub>X-CH<sub>2</sub>X 35 / 78 35. What is the correct IUPAC name for structure (iv)? A) 2-Bromopent-4-ene B) 4-Bromopent-2-ene C) 4-Bromo-2-pentene D) 2-Bromo-4-pentene 36 / 78 36. Which type of carbon-halogen bond is present in benzylic halides? A) sp3 C-X bond B) sp2 C-X bond C) sp3d2 C-X bond D) sp C-X bond 37 / 78 37. Which type of carbon-halogen bond is typically formed in alkyl halides or haloalkanes? A) sp2 C-X bond B) sp3 C-X bond C) sp C-X bond D) sp3d2 C-X bond 38 / 78 38. For monohalogen substituted derivatives of benzene, what is true about their common and IUPAC names? A) The common name is always based on the historical name. B) They are different. C) The IUPAC name is based on the alphabetical order of substituents. D) They are the same. 39 / 78 39. Which of the following is a true statement regarding aryl halides? A) They contain halogen atoms bonded to sp2-hybridized carbon atoms in a benzene ring. B) They contain halogen atoms bonded to carbon atoms in a carbon-carbon triple bond. C) They contain halogen atoms bonded to sp-hybridized carbon atoms. D) They contain halogen atoms bonded to sp3-hybridized carbon atoms adjacent to a benzene ring. 40 / 78 40. Allylic halides are characterized by a halogen atom bonded to: A) An sp3-hybridized carbon atom attached to an aromatic ring B) An sp-hybridized carbon atom C) An sp2-hybridized carbon atom D) An sp3-hybridized carbon atom adjacent to a carbon-carbon double bond 41 / 78 41. The addition of halogens like bromine to an alkene results in: A) The disappearance of the double bond and a change in the color of the bromine solution B) The formation of an alkene with a higher molecular weight C) No change in the color of the bromine solution D) A change in the color of the bromine solution with the double bond intact 42 / 78 42. In the context of vinylic halides, what does sp2 hybridization imply about the carbon to which the halogen is bonded? A) The carbon is part of a carbon-carbon triple bond. B) The carbon is part of a carbon-carbon single bond. C) The carbon is bonded to an aromatic ring. D) The carbon is part of a carbon-carbon double bond. 43 / 78 43. The halogens that typically form sp3 C-X bonds in alkyl halides are: A) Fluorine, Chlorine, Bromine, and Iodine B) Nitrogen, Oxygen, Fluorine, and Chlorine C) Sulfur, Phosphorus, Fluorine, and Bromine D) Chlorine, Bromine, Iodine, and Astatine 44 / 78 44. Free radical chlorination or bromination of alkanes tends to produce: A) A complex mixture of isomeric mono- and polyhaloalkanes B) A single polyhaloalkane C) Only dimeric compounds D) A single isomeric compound 45 / 78 45. A secondary (2°) benzylic halide has its halogen atom bonded to a carbon atom that is: A) Attached to an aromatic ring directly B) Attached to one other carbon which is part of an aromatic ring C) Not connected to any carbon atoms D) Attached to two other carbons where one is part of an aromatic ring 46 / 78 46. What is the application of halothane? A) Treatment of malaria B) Treatment of typhoid fever C) Blood substitute in surgery D) Anesthesia during surgery 47 / 78 47. Structure (v) is named as which of the following in IUPAC nomenclature? A) 2-Bromo-3-methylpropene B) 1-Bromo-3-methylpropene C) 3-Bromo-1-methylpropene D) 3-Bromo-2-methylpropene 48 / 78 48. The prefix 'iso' in isopropyl chloride indicates: A) An isomeric compound B) A cyclic compound C) A straight-chain compound D) A branched-chain compound 49 / 78 49. A secondary (2°) alkyl halide has the halogen atom attached to a carbon that is also connected to: A) One other carbon atom B) Four other carbon atoms C) Two other carbon atoms D) Three other carbon atoms 50 / 78 50. What is the IUPAC name for the compound shown in structure (i)? A) 4-Bromopentane B) 2-Bromopentane C) 1-Bromopentane D) 3-Bromopentane 51 / 78 51. What type of hybridized carbon atoms are present in the structure of haloarenes? A) sp3 hybridized B) sp2 hybridized C) sp hybridized D) sp4 hybridized 52 / 78 52. Haloalkanes and haloarenes can be classified based on the: A) Number of halogen atoms B) Physical state at room temperature C) Number of carbon atoms D) Type of hybridization 53 / 78 53. Vic-dihalides are named based on the presence of: A) Two halogens on the same carbon atom. B) Two halogens on aromatic rings. C) Two halogens on two adjacent carbon atoms. D) Halogens on tertiary carbon atoms. 54 / 78 54. The compound CH3CH(Cl)CH3 is named as 2-Chloropropane in the IUPAC system because: A) The compound has two chlorine atoms. B) The chlorine is on the first carbon. C) The compound is an isomer of propene. D) The chlorine is on the second carbon of a three-carbon chain. 55 / 78 55. The compound CHCl3​ is known by what IUPAC name? A) Tetrachloromethane B) Trichloromethane C) Chloroform D) Dichloromethane 56 / 78 56. In the naming of dihalogenated benzene, what do the prefixes o-, m-, and p- represent in the common naming system? A) The presence of a functional group B) The type of halogen atoms C) The number of halogen atoms D) Ortho, meta, and para positions relative to each other 57 / 78 57. A compound with the IUPAC name 1-bromo-2,2-dimethylpropane will have how many carbon atoms? A) Four B) Five C) Three D) Six 58 / 78 58. Benzyl halides are compounds in which the halogen atom is bonded to: A) An sp-hybridized carbon atom B) A benzene ring directly C) A carbon atom that is part of an aliphatic ring D) An sp3-hybridized carbon atom attached to an aromatic ring 59 / 78 59. What is the IUPAC name for the compound with the common name n-Propyl fluoride? A) 1-Fluoropropane B) 3-Fluoropropane C) 1-Fluoro-2-methylpropane D) 2-Fluoropropane 60 / 78 60. A monohaloalkane is characterized by: A) A single ring structure with one halogen B) One halogen atom attached to each carbon in the chain C) Multiple halogen atoms attached to an aromatic ring D) One halogen atom attached to an aliphatic carbon chain 61 / 78 61. gem-dihalides refer to: A) Compounds with two halogens on opposite ends of a carbon chain. B) Compounds with two different halogens on the same carbon atom. C) Compounds with two halogens on the same carbon atom. D) Compounds with two halogens on adjacent carbon atoms. 62 / 78 62. What is the general term used to describe the replacement of hydrogen atoms in hydrocarbons by halogen atoms? A) Halogenation B) Halogenization C) Hydrogenization D) Hydrogenation 63 / 78 63. The primary structural difference between vinylic halides and aryl halides is: A) The type of carbon bond (single or double) to which the halogen is bonded B) The number of halogen atoms bonded to the carbon atom C) Whether the halogen is bonded to a carbon in a double bond or an aromatic ring D) The degree of hybridization of the carbon atom to which the halogen is bonded 64 / 78 64. The IUPAC name for the compound depicted in structure (iii) is: A) 1-Bromo-2,2-dimethylpropane B) 2-Bromo-2-methylpropane C) 1-Bromo-3,3-dimethylpropane D) 2-Bromo-3,3-dimethylpropane 65 / 78 65. To prepare alkyl bromides from alcohols, which reagent can be used? A) Hydroiodic acid (HI) B) Hydrochloric acid (HCl) C) Phosphorus tribromide (PBr₃) D) Hydrobromic acid (HBr) 66 / 78 66. As you go down the group in the periodic table, what happens to the carbon-halogen bond length in alkyl halides? A) It fluctuates unpredictably B) It decreases C) It increases D) It remains the same 67 / 78 67. Tertiary (3°) alkyl halides are those in which the halogen atom is attached to a carbon atom that is connected to: A) No other carbon atoms B) Three other carbon atoms C) Two other carbon atoms D) One other carbon atom 68 / 78 68. The preparation of alkyl chlorides can be carried out by passing dry hydrogen chloride gas through: A) A solution of alcohol and concentrated hydrochloric acid B) An aqueous solution of alcohol C) A dry solution of alcohol D) A solution of alcohol and concentrated sulfuric acid 69 / 78 69. The reaction of an alkene with a hydrogen halide (HX) follows: A) The Anti-Markovnikov's rule B) The syn-addition rule C) The anti-addition rule D) The Markovnikov's rule 70 / 78 70. Which carbon-halogen bond is the shortest according to Table 6.2? A) Carbon-Fluorine B) Carbon-Bromine C) Carbon-Chlorine D) Carbon-Iodine 71 / 78 71. A compound with two halogen atoms attached to different carbon atoms is called a: A) Tetrahaloalkane B) Monohaloalkane C) Dihaloalkane D) Trihaloalkane 72 / 78 72. Halogen atoms are more electronegative than carbon, which results in what kind of charge on the carbon in a carbon-halogen bond of an alkyl halide? A) A partial negative charge B) A partial positive charge C) A full negative charge D) No charge 73 / 78 73. Structure (ii) represents which of the following IUPAC names? A) 1-Bromo-2-methylbutane B) 1-Bromo-3-methylbutane C) 2-Bromo-3-methylbutane D) 3-Bromo-2-methylbutane 74 / 78 74. The addition of bromine to an alkene is an important reaction because it: A) Is used to create bromine gas B) Is a substitution reaction C) Always results in a single product D) Tests for the presence of double bonds in a molecule 75 / 78 75. In the context of haloarenes, what does the 'X' represent in the structures shown? A) Any carbonyl group B) Any alkyl group C) Any alkoxy group D) Any halogen atom 76 / 78 76. Which of the following carbon-halogen bonds has the highest bond enthalpy? A) C-F B) C-Br C) C-I D) C-Cl 77 / 78 77. The IUPAC name for the compound commonly known as ethylene chloride is: A) 1,2-Dichloroethane B) 1,2-Dichloroethylene C) 1,1-Dichloroethane D) Dichloroethylene 78 / 78 78. Aryl halides are compounds where the halogen atom is directly bonded to: A) An sp3-hybridized carbon atom adjacent to an aromatic ring B) An sp-hybridized carbon atom of an aliphatic chain C) An sp2-hybridized carbon atom of an aromatic ring D) A carbon atom that is part of a carbon-carbon single bond Your score is LinkedIn Facebook Twitter VKontakte 0%