Chemistry Alcohols And Phenols Online Mcqs Test

Mustansar KhanLast Updated: October 14, 2025

Important Chemistry Alcohols And Phenols Question and Answer

Total Questions:	98
Time Allowed:	40 Minutes
Total Marks:	98
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Chemistry Alcohols And Phenols Practice Test Online With Explanation

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Page 1 of 4

Uncategorized

1. Which of the following is used in the manufacture of aspirin?

Salicylic acid

Phenol

Acetic acid

Ethanol

2. Which alcohol can be oxidized to form a ketone?

Ethanol

Tert-butanol

Methanol

2-propanol

3. Which of the following is the correct IUPAC name for CH₃CH₂OH?

Ethyl alcohol

Methanol

Ethanol

Propanol

4. Alcohols differ from phenols in that alcohols:

Are aromatic

Are less soluble in water

Do not show electrophilic aromatic substitution

Are more acidic

5. Which type of alcohol is isopropyl alcohol?

Primary

Tertiary

Secondary

Aromatic

6. Which of the following is used in the manufacture of aspirin?

Phenol

Acetic acid

Ethanol

Salicylic acid

7. Which of the following alcohols is tertiary?

(CH₃)₃COH

CH₃CH₂OH

CH₃CH(OH)CH₃

CH₃OH

8. Which reaction forms phenol from benzene?

Nitration

Friedel-Crafts alkylation

Dow’s process (chlorobenzene + NaOH)

Sulfonation

9. What functional group is present in alcohols?

–NH₂

–OH

–COOH

–CHO

10. Which compound is formed when two alcohol molecules combine in acidic conditions?

Ketone

Ether

Amine

Aldehyde

11. Which of the following has the highest boiling point?

Propanol

Methanol

Ethanol

Glycerol

12. Which alcohol gives a positive iodoform test?

Methanol

Benzyl alcohol

Propanol

Ethanol

13. Which compound is more acidic?

Ethanol

Methanol

Phenol

Propanol

14. Which reagent converts alcohols into alkyl halides?

HCl/ZnCl₂

Na₂CO₃

H₂O

KOH

15. Which compound is more acidic?

Propanol

Phenol

Methanol

Ethanol

16. In electrophilic substitution, phenol reacts most readily at:

Only ortho position

Para and ortho positions

Only para position

Meta position

17. Which is more reactive towards electrophilic substitution?

Aniline

Phenol

Toluene

Benzene

18. Which of the following is an example of a dihydric alcohol?

Ethylene glycol

Glycerol

Ethanol

Methanol

19. Which of the following gives a neutral solution in water?

Acetic acid

Phenol

HCl

Ethanol

20. What functional group is present in alcohols?

–NH₂

–COOH

–OH

–CHO

21. Phenol is more acidic than alcohol due to:

Solubility in water

Resonance stabilization of phenoxide ion

High boiling point

High molecular weight

22. Which of the following gives violet color with neutral FeCl₃?

Methanol

Phenol

2-propanol

Ethanol

23. Which type of alcohol forms esters most readily?

Tertiary

Secondary

Aromatic

Primary

24. Which of the following reacts fastest in Lucas test?

Methanol

Ethanol

2-propanol

Tert-butanol

25. Which of the following reactions is not typical for alcohols?

Dehydration

Friedel-Crafts alkylation

Esterification

Oxidation

Page 2 of 4

26. Which of the following best distinguishes alcohols from phenols?

Phenols form ketones

Alcohols have higher boiling point

Phenols give violet color with FeCl₃

Alcohols are colored

27. Which of the following alcohols is miscible in water in all proportions?

Propanol

Pentanol

Methanol

Butanol

28. Which product is formed when ethanol is heated with acetic acid and concentrated H₂SO₄?

Acetic anhydride

Acetaldehyde

Ethene

Ethyl acetate

29. Which of the following best distinguishes alcohols from phenols?

Alcohols are colored

Phenols form ketones

Alcohols have higher boiling point

Phenols give violet color with FeCl₃

30. Which is more reactive towards electrophilic substitution?

Toluene

Aniline

Benzene

Phenol

31. Which alcohol cannot be oxidized to a carbonyl compound?

2-propanol

Tert-butanol

Ethanol

Methanol

32. What is the main difference between alcohol and phenol?

Phenols have –OH directly bonded to benzene

Phenols are saturated

Alcohols contain carbonyl groups

Alcohols have aromatic rings

33. What is formed when phenol reacts with sodium metal?

Toluene

Phenyl chloride

Benzene

Sodium phenoxide

34. What is the major product when phenol reacts with nitric acid?

o-Nitrophenol

Benzene

Nitrobenzene

m-Nitrophenol

35. What is the major product when phenol reacts with nitric acid?

m-Nitrophenol

Nitrobenzene

Benzene

o-Nitrophenol

36. In the Lucas test, tertiary alcohols react:

Immediately at room temperature

Slowly

With heating only

Not at all

37. Which of the following is the correct IUPAC name for CH₃CH₂OH?

Methanol

Ethanol

Propanol

Ethyl alcohol

38. Which of the following has the highest boiling point?

Ethanol

Glycerol

Methanol

Propanol

39. Which alcohol can be oxidized to form a ketone?

Methanol

Tert-butanol

Ethanol

2-propanol

40. Phenol reacts with bromine water to give:

4-bromophenol

Benzyl bromide

2-bromophenol

2,4,6-tribromophenol

41. Which type of alcohol is isopropyl alcohol?

Aromatic

Tertiary

Primary

Secondary

42. Which acid is used in esterification of alcohols?

Acetic acid

Hydrochloric acid

Nitric acid

Sulfuric acid

43. What is the IUPAC name of phenol?

Hydroxybenzene

Benzyl alcohol

Benzenol

Benzene hydroxide

44. Which alcohol is commonly used in hand sanitizers?

Propan-1-ol

Butanol

Ethanol

Methanol

45. Which alcohol gives a positive iodoform test?

Propanol

Ethanol

Benzyl alcohol

Methanol

46. What happens to alcohol in the presence of concentrated H₂SO₄ and heat?

Dehydration to form alkene

Oxidation

Halogenation

Esterification

47. Which of the following statements is true?

Phenols are more acidic than alcohols

Alcohols have aromatic rings

Alcohols react faster with bromine water

Phenols undergo SN1 reactions

48. Which of the following reacts fastest in Lucas test?

Tert-butanol

2-propanol

Ethanol

Methanol

49. Which product is formed when ethanol is heated with acetic acid and concentrated H₂SO₄?

Acetaldehyde

Ethene

Acetic anhydride

Ethyl acetate

50. Which of the following is not a method to prepare alcohols?

Nitration of alkanes

Reduction of carbonyl compounds

Hydroboration

Hydrolysis of alkyl halides

Page 3 of 4

51. Which type of alcohol forms esters most readily?

Aromatic

Primary

Secondary

Tertiary

52. Which of the following will give a fruity smell on reaction with a carboxylic acid?

Methanol

Ethanol

Butanol

Phenol

53. Which alcohol is commonly used in hand sanitizers?

Propan-1-ol

Methanol

Ethanol

Butanol

54. Which of the following can undergo both SN1 and E1 reactions?

Phenol

Tertiary alcohol

Secondary alcohol

Primary alcohol

55. Phenol reacts with bromine water to give:

4-bromophenol

2,4,6-tribromophenol

2-bromophenol

Benzyl bromide

56. Which of the following reactions does phenol undergo easily?

Electrophilic aromatic substitution

Addition reaction

Free radical substitution

Nucleophilic substitution

57. Which of the following can undergo both SN1 and E1 reactions?

Secondary alcohol

Phenol

Tertiary alcohol

Primary alcohol

58. Which of the following reactions does phenol undergo easily?

Free radical substitution

Nucleophilic substitution

Electrophilic aromatic substitution

Addition reaction

59. Which of the following gives violet color with neutral FeCl₃?

Methanol

Ethanol

2-propanol

Phenol

60. Which of the following statements is true?

Phenols are more acidic than alcohols

Alcohols react faster with bromine water

Phenols undergo SN1 reactions

Alcohols have aromatic rings

61. Which compound is formed when two alcohol molecules combine in acidic conditions?

Aldehyde

Amine

Ketone

Ether

62. Which reagent can oxidize a primary alcohol to a carboxylic acid?

NaOH

KMnO₄

HCl

NH₃

63. Which of the following is not a method to prepare alcohols?

Hydrolysis of alkyl halides

Reduction of carbonyl compounds

Nitration of alkanes

Hydroboration

64. Which of the following gives a neutral solution in water?

HCl

Phenol

Acetic acid

Ethanol

65. Which of the following is most reactive in dehydration to form alkenes?

Ethanol

Methanol

2-propanol

Tert-butanol

66. Which acid is used in esterification of alcohols?

Nitric acid

Hydrochloric acid

Sulfuric acid

Acetic acid

67. The –OH group in phenol makes it:

Electrically neutral

Electron-donating

Electron-withdrawing

Non-polar

68. Which reagent converts alcohols into alkyl halides?

Na₂CO₃

KOH

H₂O

HCl/ZnCl₂

69. Phenol reacts with acetic anhydride to form:

Ester

Acid

Ether

Ketone

70. Phenol is more acidic than alcohol due to:

Solubility in water

Resonance stabilization of phenoxide ion

High molecular weight

High boiling point

71. Which test is used to distinguish between alcohol and phenol?

Ferric chloride test

Lucas test

Tollen’s test

Benedict’s test

72. What is formed when phenol reacts with sodium metal?

Sodium phenoxide

Toluene

Phenyl chloride

Benzene

73. Which reaction forms phenol from benzene?

Dow’s process (chlorobenzene + NaOH)

Sulfonation

Friedel-Crafts alkylation

Nitration

74. Which of the following is an example of a dihydric alcohol?

Ethylene glycol

Ethanol

Glycerol

Methanol

75. Which of the following is most acidic?

Phenol

Water

Methanol

Ethanol

Page 4 of 4

76. Which test is used to distinguish between alcohol and phenol?

Tollen’s test

Ferric chloride test

Benedict’s test

Lucas test

77. Which of the following is most reactive in dehydration to form alkenes?

Tert-butanol

2-propanol

Methanol

Ethanol

78. Which of the following alcohols is miscible in water in all proportions?

Methanol

Pentanol

Butanol

Propanol

79. Which reagent can oxidize a primary alcohol to a carboxylic acid?

KMnO₄

NH₃

HCl

NaOH

80. Which of the following alcohols is tertiary?

CH₃OH

CH₃CH₂OH

CH₃CH(OH)CH₃

(CH₃)₃COH

81. What is the main difference between alcohol and phenol?

Phenols have –OH directly bonded to benzene

Alcohols contain carbonyl groups

Phenols are saturated

Alcohols have aromatic rings

82. What is the hybridization of oxygen in an alcohol molecule?

sp²d

sp²

sp³

83. Which of the following is most acidic?

Phenol

Methanol

Water

Ethanol

84. In electrophilic substitution, phenol reacts most readily at:

Only para position

Meta position

Para and ortho positions

Only ortho position

85. Phenol reacts with acetic anhydride to form:

Ketone

Ester

Acid

Ether

86. Which alcohol cannot be oxidized to a carbonyl compound?

Methanol

2-propanol

Ethanol

Tert-butanol

87. What is the hybridization of oxygen in an alcohol molecule?

sp²

sp²d

sp³

88. Alcohols react with carboxylic acids to form:

Ethers

Aldehydes

Ketones

Esters

89. Which class of alcohol is CH₃CH₂CH₂OH?

Tertiary

Secondary

Primary

Quaternary

90. What happens to alcohol in the presence of concentrated H₂SO₄ and heat?

Dehydration to form alkene

Esterification

Halogenation

Oxidation

91. What is the IUPAC name of phenol?

Benzyl alcohol

Benzene hydroxide

Hydroxybenzene

Benzenol

92. In the Lucas test, tertiary alcohols react:

Slowly

Not at all

Immediately at room temperature

With heating only

93. Which of the following will give a fruity smell on reaction with a carboxylic acid?

Methanol

Ethanol

Butanol

Phenol

94. Which class of alcohol is CH₃CH₂CH₂OH?

Secondary

Tertiary

Quaternary

Primary

95. Alcohols react with carboxylic acids to form:

Aldehydes

Ethers

Ketones

Esters

96. Alcohols differ from phenols in that alcohols:

Are less soluble in water

Do not show electrophilic aromatic substitution

Are more acidic

Are aromatic

97. The –OH group in phenol makes it:

Non-polar

Electron-withdrawing

Electrically neutral

Electron-donating

98. Which of the following reactions is not typical for alcohols?

Friedel-Crafts alkylation

Dehydration

Esterification

Oxidation

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Mustansar KhanLast Updated: October 14, 2025

Important Chemistry Alcohols And Phenols Question and Answer

Chemistry Alcohols And Phenols Practice Test Online With Explanation

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