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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?

Sodium phenoxide

Toluene

Phenyl chloride

Benzene

2. Which of the following alcohols is tertiary?

(CH₃)₃COH

CH₃OH

CH₃CH₂OH

CH₃CH(OH)CH₃

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

Ethanol

2-propanol

Tert-butanol

Methanol

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

sp²d

sp²

sp³

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

Methanol

Ethanol

2-propanol

Tert-butanol

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

Para and ortho positions

Only ortho position

Meta position

Only para position

7. Which reaction forms phenol from benzene?

Friedel-Crafts alkylation

Nitration

Sulfonation

Dow’s process (chlorobenzene + NaOH)

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

2-propanol

Methanol

Tert-butanol

Ethanol

9. Which type of alcohol is isopropyl alcohol?

Aromatic

Tertiary

Primary

Secondary

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

Esterification

Halogenation

Oxidation

Dehydration to form alkene

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

Phenol

Tertiary alcohol

Primary alcohol

Secondary alcohol

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

Oxidation

Esterification

Dehydration

Friedel-Crafts alkylation

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

2-propanol

Tert-butanol

Methanol

Ethanol

14. Which compound is more acidic?

Phenol

Propanol

Ethanol

Methanol

15. Alcohols react with carboxylic acids to form:

Ethers

Aldehydes

Ketones

Esters

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

Oxidation

Esterification

Dehydration

Friedel-Crafts alkylation

17. The –OH group in phenol makes it:

Electrically neutral

Electron-withdrawing

Electron-donating

Non-polar

18. Phenol is more acidic than alcohol due to:

Resonance stabilization of phenoxide ion

High molecular weight

High boiling point

Solubility in water

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

Acetaldehyde

Ethyl acetate

Acetic anhydride

Ethene

20. Which alcohol gives a positive iodoform test?

Methanol

Propanol

Ethanol

Benzyl alcohol

21. 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

22. Which type of alcohol is isopropyl alcohol?

Primary

Secondary

Tertiary

Aromatic

23. Phenol reacts with acetic anhydride to form:

Acid

Ketone

Ester

Ether

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

Phenol

Ethanol

Methanol

2-propanol

25. In the Lucas test, tertiary alcohols react:

Immediately at room temperature

Slowly

With heating only

Not at all

Page 2 of 4

26. Which of the following is most acidic?

Water

Methanol

Ethanol

Phenol

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

m-Nitrophenol

o-Nitrophenol

Nitrobenzene

Benzene

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

Benzene

Phenyl chloride

Sodium phenoxide

Toluene

29. Which alcohol gives a positive iodoform test?

Ethanol

Benzyl alcohol

Propanol

Methanol

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

Tert-butanol

Methanol

Ethanol

2-propanol

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

Methanol

Propanol

Ethanol

Ethyl alcohol

32. Which reagent converts alcohols into alkyl halides?

HCl/ZnCl₂

Na₂CO₃

KOH

H₂O

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

Ethylene glycol

Methanol

Ethanol

Glycerol

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

Methanol

Phenol

2-propanol

Ethanol

35. In the Lucas test, tertiary alcohols react:

With heating only

Not at all

Immediately at room temperature

Slowly

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

Phenols give violet color with FeCl₃

Phenols form ketones

Alcohols are colored

Alcohols have higher boiling point

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

sp²d

sp²

sp³

38. Which acid is used in esterification of alcohols?

Sulfuric acid

Hydrochloric acid

Acetic acid

Nitric acid

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

NH₃

KMnO₄

HCl

NaOH

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

Ethanol

Phenol

HCl

Acetic acid

41. Which alcohol is commonly used in hand sanitizers?

Ethanol

Butanol

Propan-1-ol

Methanol

42. Which reaction forms phenol from benzene?

Dow’s process (chlorobenzene + NaOH)

Sulfonation

Nitration

Friedel-Crafts alkylation

43. Which type of alcohol forms esters most readily?

Tertiary

Secondary

Aromatic

Primary

44. Phenol reacts with bromine water to give:

2-bromophenol

2,4,6-tribromophenol

Benzyl bromide

4-bromophenol

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

Acetic anhydride

Acetaldehyde

Ethyl acetate

Ethene

46. Phenol reacts with acetic anhydride to form:

Ether

Ketone

Ester

Acid

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

Ethanol

Tert-butanol

2-propanol

Methanol

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

Ethanol

Butanol

Phenol

Methanol

49. What functional group is present in alcohols?

–CHO

–OH

–COOH

–NH₂

50. Phenol reacts with bromine water to give:

4-bromophenol

2,4,6-tribromophenol

2-bromophenol

Benzyl bromide

Page 3 of 4

51. What is the IUPAC name of phenol?

Benzyl alcohol

Hydroxybenzene

Benzene hydroxide

Benzenol

52. Alcohols differ from phenols in that alcohols:

Are less soluble in water

Are more acidic

Are aromatic

Do not show electrophilic aromatic substitution

53. Which reagent converts alcohols into alkyl halides?

H₂O

HCl/ZnCl₂

KOH

Na₂CO₃

54. Which of the following alcohols is tertiary?

CH₃CH₂OH

CH₃CH(OH)CH₃

(CH₃)₃COH

CH₃OH

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

Benedict’s test

Ferric chloride test

Tollen’s test

Lucas test

56. Which compound is more acidic?

Propanol

Methanol

Ethanol

Phenol

57. Which of the following is most acidic?

Phenol

Ethanol

Water

Methanol

58. What is the IUPAC name of phenol?

Benzene hydroxide

Benzenol

Benzyl alcohol

Hydroxybenzene

59. Phenol is more acidic than alcohol due to:

Resonance stabilization of phenoxide ion

Solubility in water

High molecular weight

High boiling point

60. Alcohols react with carboxylic acids to form:

Esters

Aldehydes

Ketones

Ethers

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

Ethanol

2-propanol

Tert-butanol

Methanol

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

Nucleophilic substitution

Addition reaction

Electrophilic aromatic substitution

Free radical substitution

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

Phenols form ketones

Phenols give violet color with FeCl₃

Alcohols have higher boiling point

Alcohols are colored

64. Which type of alcohol forms esters most readily?

Tertiary

Secondary

Aromatic

Primary

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

Ethanol

HCl

Acetic acid

Phenol

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

Amine

Ketone

Ether

Aldehyde

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

Methanol

Ethanol

2-propanol

Tert-butanol

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

Propanol

Methanol

Ethanol

Glycerol

69. The –OH group in phenol makes it:

Electrically neutral

Electron-donating

Electron-withdrawing

Non-polar

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

Salicylic acid

Ethanol

Phenol

Acetic acid

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

Methanol

Phenol

Ethanol

Butanol

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

NaOH

HCl

NH₃

KMnO₄

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

Para and ortho positions

Only ortho position

Only para position

Meta position

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

Pentanol

Propanol

Butanol

Methanol

75. Which class of alcohol is CH₃CH₂CH₂OH?

Primary

Tertiary

Quaternary

Secondary

Page 4 of 4

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

Hydroboration

Hydrolysis of alkyl halides

Nitration of alkanes

Reduction of carbonyl compounds

77. Which is more reactive towards electrophilic substitution?

Aniline

Benzene

Phenol

Toluene

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

Methanol

Propanol

Ethanol

Glycerol

79. What functional group is present in alcohols?

–NH₂

–COOH

–OH

–CHO

80. Which class of alcohol is CH₃CH₂CH₂OH?

Quaternary

Tertiary

Primary

Secondary

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

Halogenation

Oxidation

Dehydration to form alkene

Esterification

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

Glycerol

Ethylene glycol

Ethanol

Methanol

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

Phenols have –OH directly bonded to benzene

Alcohols contain carbonyl groups

Alcohols have aromatic rings

Phenols are saturated

84. Which alcohol is commonly used in hand sanitizers?

Methanol

Propan-1-ol

Butanol

Ethanol

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

Secondary alcohol

Phenol

Tertiary alcohol

Primary alcohol

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

Salicylic acid

Phenol

Ethanol

Acetic acid

87. Which of the following statements is true?

Phenols undergo SN1 reactions

Alcohols react faster with bromine water

Phenols are more acidic than alcohols

Alcohols have aromatic rings

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

Aldehyde

Amine

Ketone

Ether

89. Which acid is used in esterification of alcohols?

Sulfuric acid

Nitric acid

Hydrochloric acid

Acetic acid

90. Which of the following statements is true?

Alcohols react faster with bromine water

Alcohols have aromatic rings

Phenols undergo SN1 reactions

Phenols are more acidic than alcohols

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

Ferric chloride test

Lucas test

Tollen’s test

Benedict’s test

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

Electrophilic aromatic substitution

Free radical substitution

Addition reaction

Nucleophilic substitution

93. Which is more reactive towards electrophilic substitution?

Toluene

Phenol

Aniline

Benzene

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

Ethanol

Ethyl alcohol

Propanol

Methanol

95. Alcohols differ from phenols in that alcohols:

Are more acidic

Are aromatic

Do not show electrophilic aromatic substitution

Are less soluble in water

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

m-Nitrophenol

o-Nitrophenol

Nitrobenzene

Benzene

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

Methanol

Pentanol

Butanol

Propanol

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

Hydroboration

Nitration of alkanes

Hydrolysis of alkyl halides

Reduction of carbonyl compounds

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Mustansar KhanLast Updated: October 14, 2025

Chemistry Alcohols And Phenols Online Mcqs Test

Important Chemistry Alcohols And Phenols Question and Answer

Chemistry Alcohols And Phenols Practice Test Online With Explanation

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