A) SN1
B) E1
C) SN2
D) E2
View AnswerC
27. Which of the following compounds is a phenolic compound?
A) Methanol
B) Ethylene glycol
C) Anisole
D) Cyclohexanol
View AnswerC
28. What is the main product of dehydration of 2-butanol?
A) Butene
B) Butyne
C) Butanol
D) Butanal
View AnswerA
29. What is the main use of phenol in industry?
A) As a solvent
B) As an antiseptic
C) In the production of plastics
D) As a fuel
View AnswerC
30. Which reagent can be used to convert alcohols to alkyl halides?
A) PCl5
B) NaOH
C) H2SO4
D) HCl
View AnswerA
31. Which type of reaction do alcohols undergo with carboxylic acids?
A) Esterification
B) Hydrolysis
C) Substitution
D) Addition
View AnswerA
32. What is the boiling point of alcohols compared to hydrocarbons of similar molecular weight?
A) Higher
B) Lower
C) Equal
D) Variable
View AnswerA
33. What is the primary alcohol obtained from the reduction of butanal?
A) Butan-1-ol
B) Butan-2-ol
C) 2-Methylpropan-1-ol
D) 2-Butanol
View AnswerA
34. Which compound is the simplest aromatic alcohol?
A) Ethanol
B) Methanol
C) Phenol
D) Cyclohexanol
View AnswerC
35. What type of alcohol is 2-pentanol?
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
View AnswerB
36. How do alcohols generally behave in the presence of sodium?
A) They react vigorously
B) No reaction occurs
C) They decompose
D) They produce hydrogen gas
View AnswerD
37. What is the acidity of phenols primarily due to?
A) The hydroxyl group
B) The aromatic ring
C) The alkyl group
D) The carbon chain
View AnswerB
38. Which of the following compounds is a strong acid compared to alcohol?
A) Ethanol
B) Phenol
C) Methanol
D) Acetic acid
View AnswerD
39. Which product is formed when phenol reacts with sulfuric acid?
A) Phenol sulfate
B) Benzene sulfonic acid
C) Hydroquinone
D) Catechol
View AnswerB
40. Which reaction involves the conversion of an alcohol into an alkene?
A) Reduction
B) Hydrolysis
C) Dehydration
D) Halogenation
View AnswerC
41. Which of the following statements about phenols is true?
A) They are less acidic than alcohols.
B) They are more acidic than alcohols.
C) They are neutral compounds.
D) They do not form salts.
View AnswerB
42. Which type of alcohol can undergo elimination to form an alkene most readily?
A) Primary
B) Secondary
C) Tertiary
D) None of the above
View AnswerC
43. Which alcohol is obtained from the fermentation of sugars?
A) Methanol
B) Ethanol
C) Butanol
D) Propanol
View AnswerB
44. Which of the following has the highest boiling point?
A) Methanol
B) Ethanol
C) 1-Propanol
D) 1-Butanol
View AnswerD
45. What type of alcohol is isopropanol?
A) Primary
B) Secondary
C) Tertiary
D) None of the above
View AnswerB
46. Which compound can be classified as a diol?
A) 1,2-Ethanediol
B) 2-Propanol
C) Phenol
D) 1-Butanol
View AnswerA
47. Which alcohol is most likely to react via the SN1 mechanism?
A) Ethanol
B) 1-Butanol
C) 2-Butanol
D) Methanol
View AnswerC
48. What happens when a phenol is treated with a strong base?
A) It remains unchanged
B) It forms a phenoxide ion
C) It forms an ester
D) It undergoes oxidation
View AnswerB
49. Which of the following phenolic compounds is a natural antioxidant?
A) Catechol
B) Resorcinol
C) Thymol
D) All of the above
View AnswerD
50. Which reagent is commonly used to oxidize alcohols?
A) KMnO4
B) HCl
C) NaOH
D) H2SO4
View AnswerA
51. What is the primary product when a phenol is subjected to nitration?
A) Nitrobenzene
B) 2-Nitrophenol
C) 4-Nitrophenol
D) 3-Nitrophenol
View AnswerB
52. Which statement is true regarding the molecular structure of alcohols?
A) They contain a carbonyl group.
B) They contain a hydroxyl group.
C) They contain an amino group.
D) They contain a carboxyl group.
View AnswerB
53. Which of the following is a characteristic of tertiary alcohols?
A) They oxidize to carboxylic acids.
B) They are more sterically hindered.
C) They readily form hydrogen bonds.
D) They are less stable than primary alcohols.
View AnswerB
54. Which of the following alcohols is least soluble in water?
A) Methanol
B) Ethanol
C) 1-Butanol
D) 1-Hexanol
View AnswerD
55. What is the result of the reaction between an alcohol and a carboxylic acid?
A) Ester
B) Ether
C) Aldehyde
D) Ketone
View AnswerA
56. Which statement best describes phenolic acidity?
A) Phenols are weak acids.
B) Phenols are strong acids.
C) Phenols are neutral compounds.
D) Phenols do not dissociate in water.
View AnswerA
57. How do steric effects influence the acidity of alcohols?
A) Increase acidity
B) Decrease acidity
C) No effect
D) Make them neutral
View AnswerB
58. What is the functional group of phenols?
A) Hydroxyl
B) Carbonyl
C) Carboxyl
D) Amino
View AnswerA
59. What happens during the electrophilic substitution of phenol?
A) Electrons are gained.
B) A hydrogen atom is replaced.
C) Electrons are lost.
D) No reaction occurs.
View AnswerB
60. Which of the following is a characteristic of primary alcohols?
A) They do not undergo oxidation.
B) They can be oxidized to aldehydes.
C) They are less reactive than tertiary alcohols.
D) They are highly soluble in water.
View AnswerB
61. Which of the following reactions can produce phenol?
A) Reduction of benzene
B) Hydrolysis of chlorobenzene
C) Oxidation of toluene
D) Dehydrogenation of cyclohexanol
View AnswerB
62. What is the outcome of reacting phenol with hydrogen bromide?
A) Bromoalkane
B) Benzene
C) Bromophenol
D) No reaction
View AnswerC
63. What effect does the presence of electron-withdrawing groups have on phenol?
A) Decreases acidity
B) Increases acidity
C) No effect
D) Neutralizes the compound
View AnswerB
64. Which type of reaction is the reduction of an alcohol to an alkane?
A) Addition
B) Elimination
C) Substitution
D) Reduction
View AnswerD
65. Which type of alcohol has the least steric hindrance?
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
View AnswerA
66. Which of the following reactions is characteristic of phenols?
A) Dehydrogenation
B) Esterification
C) Oxidation
D) Electrophilic substitution
View AnswerD
67. Which alcohol is used as a disinfectant?
A) Methanol
B) Isopropanol
C) Ethylene glycol
D) Butanol
View AnswerB
68. What is the primary product of the oxidation of isopropanol?
A) Propanol
B) Acetone
C) Propanoic acid
D) Phenol
View AnswerB
69. What is the IUPAC name of 3-pentanol?
A) Pentan-3-ol
B) 3-Pentanol
C) 2-Pentanol
D) Butan-3-ol
View AnswerA
70. What is the process of converting phenols to phenolic compounds called?
A) Nitration
B) Sulfonation
C) Hydroxylation
D) Alkylation
View AnswerD
71. Which of the following compounds is classified as a trihydric alcohol?
A) Glycerol
B) Ethanol
C) Propanol
D) Butanol
View AnswerA
72. Which of the following is a consequence of the acidity of phenol?
A) Formation of phenoxide ions
B) Increase in pH
C) Reactivity with metals
D) Formation of carboxylic acids
View AnswerA
73. What happens when phenol is treated with strong bases?
A) It produces carbon dioxide
B) It forms phenoxide ions
C) It produces hydrogen gas
D) No reaction occurs
View AnswerB
74. What is the primary product formed when phenol undergoes oxidation?
A) Benzaldehyde
B) Hydroquinone
C) Quinol
D) None of the above
View AnswerD
75. Which of the following methods is used to prepare alcohols from alkenes?
A) Hydrolysis
B) Hydrogenation
C) Oxidation
D) Hydration
View AnswerD
76. Which type of alcohol has a hydroxyl group attached to a carbon that is attached to one other carbon?
A) Primary
B) Secondary
C) Tertiary
D) Quaternary
View AnswerA
77. What type of reaction occurs when phenols are heated with zinc dust?
A) Reduction
B) Oxidation
C) Substitution
D) Elimination
View AnswerA
78. Which of the following statements is true about phenol?
A) It is a strong base.
B) It is a weak acid.
C) It does not dissolve in water.
D) It does not form salts.
View AnswerB
79. What happens when tertiary alcohols are treated with hydrogen halides?
A) They form ethers.
B) They undergo elimination.
C) They undergo nucleophilic substitution.
D) No reaction occurs.
View AnswerC
80. What is a common use for isopropyl alcohol?
A) As a solvent
B) As a fuel
C) As a flavoring agent
D) As a food preservative
View AnswerA
81. What is the characteristic feature of a phenolic compound?
A) Presence of a carbonyl group
B) Presence of a hydroxyl group attached to an aromatic ring
C) Presence of an ether group
D) Presence of an alkyl group
View AnswerB
82. Which alcohol has a higher boiling point, 1-butanol or 2-butanol?
A) 1-Butanol
B) 2-Butanol
C) Both have the same boiling point
D) Depends on atmospheric pressure
View AnswerA
83. How does the presence of electron-donating groups affect the reactivity of phenols?
A) Increase reactivity
B) Decrease reactivity
C) No effect
D) Make them neutral
View AnswerA
84. Which of the following compounds would have the lowest boiling point?
A) Methanol
B) Ethanol
C) 1-Pentanol
D) 1-Hexanol
View AnswerD
85. What type of reaction do alcohols undergo with active metals?
A) Reduction
B) Dehydration
C) Oxidation
D) Displacement
View AnswerD
86. Which of the following alcohols is most soluble in water?
A) Methanol
B) Ethanol
C) 1-Butanol
D) 1-Pentanol
View AnswerA
87. Which method is commonly used to identify phenols?
A) Litmus test
B) Ninhydrin test
C) Iodine test
D) Ferric chloride test
View AnswerD
88. What type of compound is produced when phenol reacts with a carboxylic acid?
A) Ether
B) Ester
C) Aldehyde
D) Ketone
View AnswerB
89. What is the primary reason for the higher boiling point of alcohols compared to alkanes?
A) Higher molecular weight
B) Hydrogen bonding
C) Ionic bonding
D) Dipole-dipole interactions
View AnswerB
90. Which compound is used as a preservative and has antiseptic properties?
A) Methanol
B) Ethanol
C) Phenol
D) Isopropanol
View AnswerC
91. Which of the following statements is false regarding phenols?
A) They are less acidic than alcohols.
B) They can undergo substitution reactions.
C) They can be oxidized.
D) They can form salts with strong bases.
View AnswerA
92. What is the effect of a hydroxyl group on the boiling point of alcohols?
A) Decreases boiling point
B) Increases boiling point
C) No effect
D) Depends on molecular weight
View AnswerB
93. Which of the following is a common use of glycerol?
A) As a solvent
B) In food production
C) In pharmaceuticals
D) All of the above
View AnswerD
94. What type of alcohol can be oxidized to form ketones?
A) Primary
B) Secondary
C) Tertiary
D) None of the above
View AnswerB
95. Which of the following reagents is used to synthesize alcohols from alkenes?
A) HBr
B) H2O
C) NaBH4
D) H2SO4
View AnswerB
96. Which of the following compounds can form a stable carbocation?
A) Primary alcohol
B) Secondary alcohol
C) Tertiary alcohol
D) None of the above
View AnswerC
97. Which compound is produced by the dehydration of glycerol?
A) Propylene glycol
B) Glycerol acetate
C) Acrolein
D) None of the above
View AnswerC
98. What happens to phenols in an aqueous solution?
A) They ionize completely
B) They remain neutral
C) They partially ionize
D) They form precipitates
View AnswerC
99. Which alcohol is primarily used as an antifreeze?
A) Ethanol
B) Methanol
C) Isopropanol
D) Butanol
View AnswerB
100. What is the primary functional group in phenols?
A) Hydroxyl
B) Carbonyl
C) Carboxyl
D) Ether
View AnswerA