Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

Ethylene glycol

Question 2

2. Alcohols differ from phenols in that alcohols:

Answer

Do not show electrophilic aromatic substitution

Answer

Are less soluble in water

Answer

Are more acidic

Answer

Are aromatic

Question 3

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

Question 4

4. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 5

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

Answer

Acetic acid

Question 6

6. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 7

7. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 8

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

Answer

Acetic anhydride

Answer

Ethyl acetate

Answer

Acetaldehyde

Question 9

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

Answer

Halogenation

Answer

Esterification

Answer

Dehydration to form alkene

Question 10

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

Question 11

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

Answer

Electrophilic aromatic substitution

Answer

Free radical substitution

Answer

Addition reaction

Answer

Nucleophilic substitution

Question 12

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

Answer

Only ortho position

Answer

Para and ortho positions

Answer

Meta position

Answer

Only para position

Question 13

13. Phenol reacts with acetic anhydride to form:

Question 14

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

Answer

2-propanol

Answer

Tert-butanol

Question 15

15. Which of the following statements is true?

Answer

Alcohols react faster with bromine water

Answer

Alcohols have aromatic rings

Answer

Phenols are more acidic than alcohols

Answer

Phenols undergo SN1 reactions

Question 16

16. Phenol reacts with bromine water to give:

Answer

2-bromophenol

Answer

4-bromophenol

Answer

2,4,6-tribromophenol

Answer

Benzyl bromide

Question 17

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

Answer

o-Nitrophenol

Answer

Nitrobenzene

Answer

m-Nitrophenol

Question 18

18. Phenol is more acidic than alcohol due to:

Answer

High molecular weight

Answer

Solubility in water

Answer

Resonance stabilization of phenoxide ion

Answer

High boiling point

Question 19

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

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Answer

Hydroboration

Answer

Hydrolysis of alkyl halides

Question 20

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

Answer

Tert-butanol

Answer

2-propanol

Question 21

21. What functional group is present in alcohols?

Question 22

22. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 23

23. In the Lucas test, tertiary alcohols react:

Answer

With heating only

Answer

Not at all

Answer

Immediately at room temperature

Question 24

24. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 25

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

Answer

Primary alcohol

Answer

Tertiary alcohol

Answer

Secondary alcohol

Question 26

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

Answer

2-propanol

Answer

Tert-butanol

Question 27

27. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-withdrawing

Answer

Electron-donating

Question 28

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

Question 29

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

Answer

Ethylene glycol

Question 30

30. What functional group is present in alcohols?

Question 31

31. What is the IUPAC name of phenol?

Answer

Hydroxybenzene

Answer

Benzene hydroxide

Answer

Benzyl alcohol

Question 32

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

Answer

o-Nitrophenol

Answer

m-Nitrophenol

Answer

Nitrobenzene

Question 33

33. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Question 34

34. Which type of alcohol forms esters most readily?

Question 35

35. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 36

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

Question 37

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

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Question 38

38. Phenol is more acidic than alcohol due to:

Answer

High molecular weight

Answer

High boiling point

Answer

Solubility in water

Answer

Resonance stabilization of phenoxide ion

Question 39

39. Phenol reacts with acetic anhydride to form:

Question 40

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

Answer

2-propanol

Question 41

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

Answer

Tert-butanol

Answer

2-propanol

Question 42

42. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Question 43

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 44

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

Answer

Phenols form ketones

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Question 45

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

Answer

Halogenation

Answer

Esterification

Answer

Dehydration to form alkene

Question 46

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

Answer

Salicylic acid

Answer

Acetic acid

Question 47

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

Answer

Ferric chloride test

Answer

Benedict’s test

Answer

Tollen’s test

Answer

Lucas test

Question 48

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

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Question 49

49. Which type of alcohol is isopropyl alcohol?

Question 50

50. Which is more reactive towards electrophilic substitution?

Question 51

51. Which type of alcohol is isopropyl alcohol?

Question 52

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

Answer

2-propanol

Answer

Tert-butanol

Question 53

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

Question 54

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

Answer

Salicylic acid

Answer

Acetic acid

Question 55

55. Which compound is more acidic?

Question 56

56. Alcohols differ from phenols in that alcohols:

Answer

Are more acidic

Answer

Are aromatic

Answer

Do not show electrophilic aromatic substitution

Answer

Are less soluble in water

Question 57

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

Answer

Hydrolysis of alkyl halides

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Answer

Hydroboration

Question 58

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

Answer

2-propanol

Answer

Tert-butanol

Question 59

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 60

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

Answer

2-propanol

Question 61

61. Alcohols react with carboxylic acids to form:

Question 62

62. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 63

63. Which compound is more acidic?

Question 64

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

Answer

2-propanol

Answer

Tert-butanol

Answer 129

Acetic anhydride

Answer 130

Ethyl acetate

Answer 131

Acetaldehyde

Answer 132

Friedel-Crafts alkylation

Answer 133

Esterification

Answer 134

Dehydration

Answer 135

Acetic acid

Answer 136

4-bromophenol

Answer 137

2-bromophenol

Answer 138

Benzyl bromide

Answer 139

2,4,6-tribromophenol

Answer 140

Nucleophilic substitution

Answer 141

Addition reaction

Answer 142

Free radical substitution

Answer 143

Electrophilic aromatic substitution

Answer 144

Ferric chloride test

Answer 145

Lucas test

Answer 146

Benedict’s test

Answer 147

Tollen’s test

Answer 148

Phenyl chloride

Answer 149

Sodium phenoxide

Answer 150

Alcohols have aromatic rings

Answer 151

Alcohols react faster with bromine water

Answer 152

Phenols undergo SN1 reactions

Answer 153

Phenols are more acidic than alcohols

Answer 154

Electrically neutral

Answer 155

Electron-withdrawing

Answer 156

Electron-donating

Answer 157

Ethyl alcohol

Answer 158

Meta position

Answer 159

Para and ortho positions

Answer 160

Only ortho position

Answer 161

Only para position

Answer 162

Friedel-Crafts alkylation

Answer 163

Dow’s process (chlorobenzene + NaOH)

Answer 164

Sulfonation

Answer 165

Na₂CO₃

Answer 166

HCl/ZnCl₂

Answer 167

CH₃CH(OH)CH₃

Answer 168

CH₃CH₂OH

Answer 169

(CH₃)₃COH

Answer 170

Hydrochloric acid

Answer 171

Acetic acid

Answer 172

Nitric acid

Answer 173

Sulfuric acid

Answer 174

Phenols are saturated

Answer 175

Alcohols have aromatic rings

Answer 176

Alcohols contain carbonyl groups

Answer 177

Phenols have –OH directly bonded to benzene

Answer 178

Quaternary

Answer 179

Ethyl alcohol

Answer 180

CH₃CH₂OH

Answer 181

(CH₃)₃COH

Answer 182

CH₃CH(OH)CH₃

Answer 183

Esterification

Answer 184

Dehydration

Answer 185

Friedel-Crafts alkylation

Answer 186

Hydroxybenzene

Answer 187

Benzene hydroxide

Answer 188

Benzyl alcohol

Answer 189

Tert-butanol

Answer 190

2-propanol

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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