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