HALOALKANES AND HALOARENES 0% 0 Halogens and Haloarenes 1 / 78 1. In the context of haloarenes, what does the 'X' represent in the structures shown? A) Any alkoxy group B) Any alkyl group C) Any halogen atom D) Any carbonyl group 2 / 78 2. Which of the following is a true statement regarding aryl halides? A) They contain halogen atoms bonded to sp-hybridized carbon atoms. B) They contain halogen atoms bonded to carbon atoms in a carbon-carbon triple bond. C) They contain halogen atoms bonded to sp3-hybridized carbon atoms adjacent to a benzene ring. D) They contain halogen atoms bonded to sp2-hybridized carbon atoms in a benzene ring. 3 / 78 3. What is the general term used to describe the replacement of hydrogen atoms in hydrocarbons by halogen atoms? A) Hydrogenation B) Halogenization C) Hydrogenization D) Halogenation 4 / 78 4. In the IUPAC system of nomenclature for alkyl halides, the names are based on: A) The alphabetical order of the substituents B) The halosubstituted hydrocarbons C) The common name of the alkyl group followed by the halide D) The length of the carbon chain only 5 / 78 5. What is the application of halothane? A) Anesthesia during surgery B) Blood substitute in surgery C) Treatment of typhoid fever D) Treatment of malaria 6 / 78 6. A secondary (2°) alkyl halide has the halogen atom attached to a carbon that is also connected to: A) Three other carbon atoms B) Two other carbon atoms C) Four other carbon atoms D) One other carbon atom 7 / 78 7. The compound in structure (vi) would be named as: A) 1-Bromo-3-ene B) 2-Bromo-1-ene C) 3-Bromo-1-ene D) 1-Bromo-2-ene 8 / 78 8. Which reagent is commonly used for converting alcohols directly into alkyl chlorides? A) PCl₅ B) ZnCl₂ C) SOCl₂ D) NaBr + H₂SO₄ 9 / 78 9. 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) The type of carbon bond (single or double) to which the halogen is bonded D) Whether the halogen is bonded to a carbon in a double bond or an aromatic ring 10 / 78 10. The preparation of alkyl chlorides can be carried out by passing dry hydrogen chloride gas through: A) An aqueous solution of alcohol B) A solution of alcohol and concentrated sulfuric acid C) A dry solution of alcohol D) A solution of alcohol and concentrated hydrochloric acid 11 / 78 11. 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 remains the same C) It increases D) It decreases 12 / 78 12. The term "polyhalogen" refers to compounds with: A) A halogen atom in a ring structure B) Exactly two halogen atoms C) Three or more halogen atoms D) One halogen atom 13 / 78 13. gem-dihalides refer to: A) Compounds with two halogens on adjacent carbon atoms. B) Compounds with two halogens on opposite ends of a carbon chain. C) Compounds with two halogens on the same carbon atom. D) Compounds with two different halogens on the same carbon atom. 14 / 78 14. When propane reacts with hydrogen chloride, the major product is: A) 2-Chloropropane B) 2-Chloropropane C) 2,3-Dichloropropane D) 1-Chloropropane 15 / 78 15. What is the clinical application of chloramphenicol? A) Treatment of malaria B) Treatment of goiter C) Treatment of typhoid fever D) Blood substitute in surgery 16 / 78 16. 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 17 / 78 17. The IUPAC name for the compound depicted in structure (iii) is: A) 2-Bromo-3,3-dimethylpropane B) 1-Bromo-2,2-dimethylpropane C) 1-Bromo-3,3-dimethylpropane D) 2-Bromo-2-methylpropane 18 / 78 18. The addition of halogens like bromine to an alkene results in: A) No change in the color of the bromine solution 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) The formation of an alkene with a higher molecular weight 19 / 78 19. 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 20 / 78 20. 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 positive charge B) A full negative charge C) A partial negative charge D) No charge 21 / 78 21. Which type of carbon-halogen bond is present in benzylic halides? A) sp3d2 C-X bond B) sp3 C-X bond C) sp2 C-X bond D) sp C-X bond 22 / 78 22. Vic-dihalides are named based on the presence of: A) Halogens on tertiary carbon atoms. B) Two halogens on the same carbon atom. C) Two halogens on two adjacent carbon atoms. D) Two halogens on aromatic rings. 23 / 78 23. Which acid is used in the dehydration of alcohols to yield alkyl halides? A) Acetic acid B) Phosphoric acid C) Sulfuric acid D) Hydrochloric acid 24 / 78 24. The prefix 'iso' in isopropyl chloride indicates: A) A cyclic compound B) A straight-chain compound C) A branched-chain compound D) An isomeric compound 25 / 78 25. Aryl halides are compounds where the halogen atom is directly bonded to: A) A carbon atom that is part of a carbon-carbon single bond B) An sp2-hybridized carbon atom of an aromatic ring C) An sp-hybridized carbon atom of an aliphatic chain D) An sp3-hybridized carbon atom adjacent to an aromatic ring 26 / 78 26. Which of the following carbon-halogen bonds has the highest bond enthalpy? A) C-Br B) C-F C) C-I D) C-Cl 27 / 78 27. 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 allylic halide B) An aryl halide C) A vinylic halide D) A benzylic halide 28 / 78 28. Which alkyl halide bond would you expect to be the most polar? A) C-Br B) C-I C) C-Cl D) C-F 29 / 78 29. According to the IUPAC nomenclature, what do the numbers 1, 2, 1', and 3' represent in dihalogen derivatives? A) The order in which the carbon atoms are counted B) The priority of the halogen atoms C) The total number of carbon and halogen atoms D) The carbon atoms to which the halogens are attached 30 / 78 30. 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 31 / 78 31. The general formula for alkyl halides is represented by: A) C <sub>n</sub>H<sub>n+1</sub> X B) C <sub>n</sub>H<sub>2n+2</sub> X C) C <sub>n</sub>H<sub>2n</sub> X D) C <sub>n</sub>H<sub>2n+1</sub> X 32 / 78 32. A compound with the IUPAC name 1-bromo-2,2-dimethylpropane will have how many carbon atoms? A) Six B) Five C) Three D) Four 33 / 78 33. Based on Table 6.2 (in previous question), what is the dipole moment of the carbon-bromine bond? A) 1.847 Debye B) 1.636 Debye C) 1.860 Debye D) 1.830 Debye 34 / 78 34. Alkyl halides, also known as haloalkanes, are characterized by a halogen atom bonded to: A) An alkoxy group B) A vinyl group C) An alkyl group D) An aromatic ring 35 / 78 35. Structure (v) is named as which of the following in IUPAC nomenclature? A) 3-Bromo-2-methylpropene B) 1-Bromo-3-methylpropene C) 2-Bromo-3-methylpropene D) 3-Bromo-1-methylpropene 36 / 78 36. In alkyl halides (haloalkanes), halogen atoms are attached to which type of carbon atom? A) sp hybridized B) sp4 hybridized C) sp2 hybridized D) sp3 hybridized 37 / 78 37. Free radical chlorination or bromination of alkanes tends to produce: A) A complex mixture of isomeric mono- and polyhaloalkanes B) Only dimeric compounds C) A single isomeric compound D) A single polyhaloalkane 38 / 78 38. Vinylic halides are characterized by the halogen atom being bonded to: A) An sp3-hybridized carbon atom of a carbon-carbon single bond B) An sp2-hybridized carbon atom of an aromatic ring C) An sp-hybridized carbon atom D) An sp2-hybridized carbon atom of a carbon-carbon double bond 39 / 78 39. The trend in bond enthalpies for carbon-halogen bonds as you go from fluorine to iodine generally shows that they: A) Stay the same B) Decrease C) Increase then decrease D) Increase 40 / 78 40. The classification of mono-, di-, or polyhalogen compounds depends on A) The number of carbon atoms in the compound B) The number of oxygen atoms in the compound C) The number of nitrogen atoms in the compound D) The number of halogen atoms in the compound 41 / 78 41. The compound CH3CH(Cl)CH3 is named as 2-Chloropropane in the IUPAC system because: A) The chlorine is on the first carbon. B) The chlorine is on the second carbon of a three-carbon chain. C) The compound has two chlorine atoms. D) The compound is an isomer of propene. 42 / 78 42. The compound CHCl3 is known by what IUPAC name? A) Trichloromethane B) Chloroform C) Tetrachloromethane D) Dichloromethane 43 / 78 43. An alkyl halide is classified as primary (1°) when the halogen is attached to: A) A carbon atom that is bonded to no other carbon atoms B) A carbon atom that is bonded to two other carbon atoms C) A carbon atom that is bonded to three other carbon atoms D) A carbon atom that is bonded to one other carbon atom 44 / 78 44. What is the IUPAC name for the compound with the common name n-Propyl fluoride? A) 3-Fluoropropane B) 2-Fluoropropane C) 1-Fluoropropane D) 1-Fluoro-2-methylpropane 45 / 78 45. In allylic halides, the halogen is attached to a carbon that is: A) Part of a carbon-carbon double bond B) Adjacent to a carbon-carbon double bond C) Adjacent to a carbon-carbon triple bond D) Not adjacent to any double bonds 46 / 78 46. The IUPAC name for the compound commonly known as ethylene chloride is: A) 1,1-Dichloroethane B) 1,2-Dichloroethylene C) 1,2-Dichloroethane D) Dichloroethylene 47 / 78 47. In the provided example, how many possible monochloro structural isomers can be formed from the free radical chlorination of CH3CH2CH2CH3? A) Three B) Four C) One D) Two 48 / 78 48. Fully fluorinated compounds are considered potential substitutes for what in surgery? A) Solvents B) Blood C) Antibiotics D) Anesthesia 49 / 78 49. Structure (ii) represents which of the following IUPAC names? A) 2-Bromo-3-methylbutane B) 1-Bromo-2-methylbutane C) 3-Bromo-2-methylbutane D) 1-Bromo-3-methylbutane 50 / 78 50. To prepare alkyl bromides from alcohols, which reagent can be used? A) Hydrochloric acid (HCl) B) Hydrobromic acid (HBr) C) Phosphorus tribromide (PBr₃) D) Hydroiodic acid (HI) 51 / 78 51. Which type of carbon-halogen bond is typically formed in alkyl halides or haloalkanes? A) sp3 C-X bond B) sp2 C-X bond C) sp C-X bond D) sp3d2 C-X bond 52 / 78 52. What deficiency disease is caused by the lack of thyroxine hormone in the body? A) Typhoid fever B) Malaria C) Surgery D) Goiter 53 / 78 53. The common name for CH2=CHCl is: A) Vinyl chloride B) Chloroethene C) Allyl chloride D) Ethylene chloride 54 / 78 54. Haloalkanes and haloarenes can be classified based on the: A) Type of hybridization B) Number of carbon atoms C) Physical state at room temperature D) Number of halogen atoms 55 / 78 55. The addition of bromine to an alkene is an important reaction because it: A) Tests for the presence of double bonds in a molecule B) Always results in a single product C) Is used to create bromine gas D) Is a substitution reaction 56 / 78 56. 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 single bond. B) The carbon is part of a carbon-carbon triple bond. C) The carbon is part of a carbon-carbon double bond. D) The carbon is bonded to an aromatic ring. 57 / 78 57. What type of hybridized carbon atoms are present in the structure of haloarenes? A) sp hybridized B) sp4 hybridized C) sp2 hybridized D) sp3 hybridized 58 / 78 58. The hydroxyl group of an alcohol is replaced by a halogen when reacting with: A) Hydrochloric acid B) Sodium hydroxide C) Sodium chloride D) Water 59 / 78 59. A compound with two halogen atoms attached to different carbon atoms is called a: A) Dihaloalkane B) Monohaloalkane C) Trihaloalkane D) Tetrahaloalkane 60 / 78 60. The reaction of an alkene with a hydrogen halide (HX) follows: A) The syn-addition rule B) The anti-addition rule C) The Anti-Markovnikov's rule D) The Markovnikov's rule 61 / 78 61. 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 a carbon-carbon triple bond, while benzylic halides have the halogen on a carbon-carbon single bond. D) Allylic halides have the halogen on an aromatic ring, while benzylic halides have the halogen on a carbon-carbon double bond. 62 / 78 62. Which of the following is the correct IUPAC name for CH3CH2CH2BrCH3CH2CH2Br? A) 1-Bromopropane B) 1-Bromobutane C) n-Propyl bromide D) Bromopropane 63 / 78 63. 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) No other carbon atoms C) Two other carbon atoms D) One other carbon atom 64 / 78 64. What is the IUPAC name for the compound shown in structure (i)? A) 1-Bromopentane B) 2-Bromopentane C) 4-Bromopentane D) 3-Bromopentane 65 / 78 65. In the naming of dihalogenated benzene, what do the prefixes o-, m-, and p- represent in the common naming system? A) The number of halogen atoms B) The type of halogen atoms C) Ortho, meta, and para positions relative to each other D) The presence of a functional group 66 / 78 66. Which synthetic halogen compound is primarily used for the treatment of malaria? A) Halothane B) Chloramphenicol C) Chloroquine D) Thyroxine 67 / 78 67. Which of the following is the correct IUPAC name for CH3CH2CHBr2? A) 1,2-Dibromopropane B) 1,3-Dibromopropane C) 2,2-Dibromopropane D) 1,1-Dibromopropane 68 / 78 68. 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 tertiary (3°) benzylic halide B) A primary (1°) benzylic halide C) A primary (1°) allylic halide D) A secondary (2°) benzylic halide 69 / 78 69. What is the correct IUPAC name for structure (iv)? A) 2-Bromo-4-pentene B) 4-Bromopent-2-ene C) 4-Bromo-2-pentene D) 2-Bromopent-4-ene 70 / 78 70. What is the IUPAC name for the compound with the common name m-Dibromobenzene? A) 1,2-Dibromobenzene B) 1,4-Dibromobenzene C) 1,5-Dibromobenzene D) 1,3-Dibromobenzene 71 / 78 71. The reaction of alcohols with thionyl chloride (SOCl₂) produces: A) Alkyl chloride, sulfur dioxide, and water B) Alkyl chloride, phosphorus pentachloride, and water C) Alkyl chloride, sulfur trioxide, and hydrogen chloride D) Alkyl chloride, sulfur dioxide, and hydrogen chloride 72 / 78 72. The halogens that typically form sp3 C-X bonds in alkyl halides are: A) Nitrogen, Oxygen, Fluorine, and Chlorine B) Sulfur, Phosphorus, Fluorine, and Bromine C) Fluorine, Chlorine, Bromine, and Iodine D) Chlorine, Bromine, Iodine, and Astatine 73 / 78 73. When preparing alkyl iodides from alcohols, what is typically used? A) Red phosphorus and iodine B) Concentrated sulfuric acid C) Red phosphorus and bromine D) Concentrated hydrochloric acid 74 / 78 74. 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) C<sub>2</sub>H<sub>3</sub>X C) CHX-CH<sub>2</sub>X D) CHX-CHX 75 / 78 75. Which carbon-halogen bond is the shortest according to Table 6.2? A) Carbon-Bromine B) Carbon-Chlorine C) Carbon-Iodine D) Carbon-Fluorine 76 / 78 76. For monohalogen substituted derivatives of benzene, what is true about their common and IUPAC names? A) The IUPAC name is based on the alphabetical order of substituents. B) They are different. C) They are the same. D) The common name is always based on the historical name. 77 / 78 77. Which of the following compounds is an example of an aryl halide (haloarene)? A) Chloramphenicol B) Thyroxine C) Chloroquine D) Halothane 78 / 78 78. Benzyl halides are compounds in which the halogen atom is bonded to: A) A benzene ring directly B) An sp3-hybridized carbon atom attached to an aromatic ring C) A carbon atom that is part of an aliphatic ring D) An sp-hybridized carbon atom Your score is LinkedIn Facebook Twitter VKontakte 0%