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

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

Benzene

Sodium phenoxide

Phenyl chloride

Toluene

2. Which of the following statements is true?

Alcohols have aromatic rings

Phenols undergo SN1 reactions

Phenols are more acidic than alcohols

Alcohols react faster with bromine water

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

sp²

sp²d

sp³

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

Alcohols are colored

Phenols form ketones

Phenols give violet color with FeCl₃

Alcohols have higher boiling point

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

Meta position

Para and ortho positions

Only ortho position

Only para position

6. Which class of alcohol is CH₃CH₂CH₂OH?

Primary

Tertiary

Secondary

Quaternary

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

Methanol

Ethanol

Ethylene glycol

Glycerol

8. Phenol reacts with acetic anhydride to form:

Ketone

Acid

Ether

Ester

9. The –OH group in phenol makes it:

Electron-withdrawing

Non-polar

Electrically neutral

Electron-donating

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

Ethanol

Phenol

Methanol

2-propanol

11. Which of the following alcohols is tertiary?

CH₃CH₂OH

(CH₃)₃COH

CH₃OH

CH₃CH(OH)CH₃

12. What functional group is present in alcohols?

–NH₂

–OH

–CHO

–COOH

13. Which alcohol is commonly used in hand sanitizers?

Methanol

Butanol

Ethanol

Propan-1-ol

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

Propanol

Ethyl alcohol

Ethanol

Methanol

15. What is the IUPAC name of phenol?

Benzyl alcohol

Hydroxybenzene

Benzenol

Benzene hydroxide

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

Ethanol

2-propanol

Methanol

Phenol

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

Ethanol

Phenol

Butanol

Methanol

18. Which of the following statements is true?

Phenols undergo SN1 reactions

Alcohols have aromatic rings

Alcohols react faster with bromine water

Phenols are more acidic than alcohols

19. Which of the following alcohols is tertiary?

CH₃CH(OH)CH₃

CH₃CH₂OH

(CH₃)₃COH

CH₃OH

20. Which type of alcohol is isopropyl alcohol?

Primary

Secondary

Aromatic

Tertiary

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

Methanol

Tert-butanol

Ethanol

2-propanol

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

NH₃

HCl

NaOH

KMnO₄

23. What functional group is present in alcohols?

–NH₂

–CHO

–COOH

–OH

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

Friedel-Crafts alkylation

Esterification

Dehydration

Oxidation

25. Which is more reactive towards electrophilic substitution?

Toluene

Benzene

Aniline

Phenol

Page 2 of 4

26. The –OH group in phenol makes it:

Electron-withdrawing

Electrically neutral

Non-polar

Electron-donating

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

2-propanol

Ethanol

Methanol

Tert-butanol

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

Addition reaction

Free radical substitution

Electrophilic aromatic substitution

Nucleophilic substitution

29. In the Lucas test, tertiary alcohols react:

With heating only

Not at all

Immediately at room temperature

Slowly

30. Which is more reactive towards electrophilic substitution?

Benzene

Aniline

Toluene

Phenol

31. Which alcohol gives a positive iodoform test?

Benzyl alcohol

Ethanol

Methanol

Propanol

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

sp²

sp³

sp²d

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

Ethene

Acetaldehyde

Acetic anhydride

Ethyl acetate

34. Which compound is more acidic?

Propanol

Methanol

Ethanol

Phenol

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

Phenol

Acetic acid

Salicylic acid

Ethanol

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

Ethanol

Glycerol

Methanol

Ethylene glycol

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

Primary alcohol

Tertiary alcohol

Phenol

Secondary alcohol

38. Which acid is used in esterification of alcohols?

Sulfuric acid

Acetic acid

Nitric acid

Hydrochloric acid

39. Which compound is more acidic?

Phenol

Methanol

Propanol

Ethanol

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

Amine

Ether

Aldehyde

Ketone

41. Which of the following is most acidic?

Ethanol

Methanol

Phenol

Water

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

Benzene

o-Nitrophenol

m-Nitrophenol

Nitrobenzene

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

Phenols give violet color with FeCl₃

Alcohols have higher boiling point

Alcohols are colored

Phenols form ketones

44. What is the IUPAC name of phenol?

Benzyl alcohol

Hydroxybenzene

Benzene hydroxide

Benzenol

45. Which type of alcohol forms esters most readily?

Primary

Tertiary

Secondary

Aromatic

46. Which reaction forms phenol from benzene?

Dow’s process (chlorobenzene + NaOH)

Friedel-Crafts alkylation

Nitration

Sulfonation

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

Phenol

Primary alcohol

Tertiary alcohol

Secondary alcohol

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

Ethanol

2-propanol

Tert-butanol

Methanol

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

Propanol

Butanol

Methanol

Pentanol

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

Salicylic acid

Phenol

Ethanol

Acetic acid

Page 3 of 4

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

Halogenation

Dehydration to form alkene

Oxidation

Esterification

52. Alcohols react with carboxylic acids to form:

Ketones

Aldehydes

Ethers

Esters

53. Which reaction forms phenol from benzene?

Sulfonation

Friedel-Crafts alkylation

Dow’s process (chlorobenzene + NaOH)

Nitration

54. Phenol is more acidic than alcohol due to:

High molecular weight

High boiling point

Solubility in water

Resonance stabilization of phenoxide ion

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

Methanol

Tert-butanol

Ethanol

2-propanol

56. Alcohols react with carboxylic acids to form:

Ketones

Ethers

Esters

Aldehydes

57. Alcohols differ from phenols in that alcohols:

Are aromatic

Are less soluble in water

Do not show electrophilic aromatic substitution

Are more acidic

58. Which class of alcohol is CH₃CH₂CH₂OH?

Secondary

Primary

Quaternary

Tertiary

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

Acetic acid

HCl

Ethanol

Phenol

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

Propanol

Methanol

Ethanol

Glycerol

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

Ketone

Aldehyde

Ether

Amine

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

Benedict’s test

Lucas test

Tollen’s test

Ferric chloride test

63. Phenol reacts with acetic anhydride to form:

Ether

Acid

Ketone

Ester

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

Only para position

Only ortho position

Para and ortho positions

Meta position

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

Methanol

Ethanol

2-propanol

Tert-butanol

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

Methanol

Ethanol

2-propanol

Tert-butanol

67. Which of the following is most acidic?

Ethanol

Water

Methanol

Phenol

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

2-propanol

Ethanol

Methanol

Tert-butanol

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

Pentanol

Butanol

Methanol

Propanol

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

Hydroboration

Reduction of carbonyl compounds

Hydrolysis of alkyl halides

Nitration of alkanes

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

Esterification

Halogenation

Dehydration to form alkene

Oxidation

72. Which type of alcohol is isopropyl alcohol?

Tertiary

Primary

Aromatic

Secondary

73. Phenol reacts with bromine water to give:

2,4,6-tribromophenol

4-bromophenol

2-bromophenol

Benzyl bromide

74. Which acid is used in esterification of alcohols?

Hydrochloric acid

Acetic acid

Nitric acid

Sulfuric acid

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

Acetic acid

Phenol

HCl

Ethanol

Page 4 of 4

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

Glycerol

Ethanol

Methanol

Propanol

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

Phenols have –OH directly bonded to benzene

Phenols are saturated

Alcohols have aromatic rings

Alcohols contain carbonyl groups

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

Tert-butanol

Ethanol

Methanol

2-propanol

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

NaOH

KMnO₄

HCl

NH₃

80. Phenol reacts with bromine water to give:

4-bromophenol

2-bromophenol

2,4,6-tribromophenol

Benzyl bromide

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

Dehydration

Esterification

Friedel-Crafts alkylation

Oxidation

82. Which reagent converts alcohols into alkyl halides?

KOH

HCl/ZnCl₂

Na₂CO₃

H₂O

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

Free radical substitution

Nucleophilic substitution

Addition reaction

Electrophilic aromatic substitution

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

Alcohols have aromatic rings

Phenols are saturated

Alcohols contain carbonyl groups

Phenols have –OH directly bonded to benzene

85. Which alcohol gives a positive iodoform test?

Propanol

Methanol

Benzyl alcohol

Ethanol

86. Alcohols differ from phenols in that alcohols:

Are more acidic

Are less soluble in water

Do not show electrophilic aromatic substitution

Are aromatic

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

Ethanol

Ethyl alcohol

Propanol

Methanol

88. Phenol is more acidic than alcohol due to:

Resonance stabilization of phenoxide ion

High molecular weight

High boiling point

Solubility in water

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

Hydroboration

Hydrolysis of alkyl halides

Nitration of alkanes

Reduction of carbonyl compounds

90. Which reagent converts alcohols into alkyl halides?

KOH

Na₂CO₃

HCl/ZnCl₂

H₂O

91. Which type of alcohol forms esters most readily?

Secondary

Aromatic

Tertiary

Primary

92. In the Lucas test, tertiary alcohols react:

With heating only

Slowly

Not at all

Immediately at room temperature

93. Which alcohol is commonly used in hand sanitizers?

Butanol

Methanol

Propan-1-ol

Ethanol

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

Ethanol

Methanol

Phenol

Butanol

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

Nitrobenzene

Benzene

m-Nitrophenol

o-Nitrophenol

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

Lucas test

Ferric chloride test

Tollen’s test

Benedict’s test

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

Acetaldehyde

Acetic anhydride

Ethyl acetate

Ethene

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

Toluene

Benzene

Phenyl chloride

Sodium phenoxide

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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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