Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

1. Phenol is more acidic than alcohol due to:

Answer

Resonance stabilization of phenoxide ion

Answer

High boiling point

Answer

High molecular weight

Answer

Solubility in water

Question 2

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

Answer

2-propanol

Answer

Tert-butanol

Question 3

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

Question 4

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

Question 5

5. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Answer

Benzene hydroxide

Question 6

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

Answer

Tert-butanol

Answer

2-propanol

Question 7

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

Answer

Esterification

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Question 8

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

Answer

Acetaldehyde

Answer

Ethyl acetate

Answer

Acetic anhydride

Question 9

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

Answer

2-propanol

Question 10

10. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 11

11. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

With heating only

Answer

Immediately at room temperature

Question 12

12. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Question 13

13. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 14

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

Answer

Alcohols are colored

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Question 15

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

Question 16

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

Answer

Dehydration to form alkene

Answer

Halogenation

Answer

Esterification

Question 17

17. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 18

18. Which compound is more acidic?

Question 19

19. Which type of alcohol is isopropyl alcohol?

Question 20

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

Answer

Acetic acid

Question 21

21. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 22

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

Answer

Hydroboration

Answer

Hydrolysis of alkyl halides

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Question 23

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

Question 24

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

Answer

Alcohols have higher boiling point

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Phenols form ketones

Question 25

25. Phenol reacts with bromine water to give:

Answer

2-bromophenol

Answer

Benzyl bromide

Answer

4-bromophenol

Answer

2,4,6-tribromophenol

Question 26

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

Question 27

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

Answer

Alcohols contain carbonyl groups

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Answer

Alcohols have aromatic rings

Question 28

28. Which of the following is most acidic?

Question 29

29. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 30

30. Which acid is used in esterification of alcohols?

Answer

Hydrochloric acid

Answer

Nitric acid

Answer

Sulfuric acid

Answer

Acetic acid

Question 31

31. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

(CH₃)₃COH

Answer

CH₃CH₂OH

Question 32

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

Answer

o-Nitrophenol

Answer

Nitrobenzene

Answer

m-Nitrophenol

Question 33

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

Answer

Ethyl alcohol

Question 34

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

Answer

Acetic acid

Answer

Salicylic acid

Question 35

35. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-donating

Answer

Electron-withdrawing

Question 36

36. What functional group is present in alcohols?

Question 37

37. Phenol reacts with bromine water to give:

Answer

2-bromophenol

Answer

2,4,6-tribromophenol

Answer

Benzyl bromide

Answer

4-bromophenol

Question 38

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

Answer

2-propanol

Answer

Tert-butanol

Question 39

39. Which type of alcohol forms esters most readily?

Question 40

40. Alcohols react with carboxylic acids to form:

Question 41

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

Answer

Ferric chloride test

Answer

Benedict’s test

Answer

Lucas test

Answer

Tollen’s test

Question 42

42. Which compound is more acidic?

Question 43

43. Which type of alcohol forms esters most readily?

Question 44

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

Answer

Acetaldehyde

Answer

Acetic anhydride

Answer

Ethyl acetate

Question 45

45. Alcohols react with carboxylic acids to form:

Question 46

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

Question 47

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 48

48. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 49

49. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 50

50. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Acetic acid

Question 51

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

Answer

Addition reaction

Answer

Nucleophilic substitution

Answer

Free radical substitution

Answer

Electrophilic aromatic substitution

Question 52

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

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols contain carbonyl groups

Answer

Phenols are saturated

Answer

Alcohols have aromatic rings

Question 53

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

Answer

2-propanol

Answer

Tert-butanol

Question 54

54. Phenol reacts with acetic anhydride to form:

Question 55

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 56

56. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-donating

Answer

Electron-withdrawing

Question 57

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

Question 58

58. Which type of alcohol is isopropyl alcohol?

Question 59

59. Which is more reactive towards electrophilic substitution?

Question 60

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

Answer

Ethyl alcohol

Question 61

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

Answer

2-propanol

Answer

Tert-butanol

Question 62

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

Answer

Primary alcohol

Answer

Secondary alcohol

Answer

Tertiary alcohol

Question 63

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

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Only para position

Answer

Meta position

Question 64

64. Which of the following is most acidic?

Answer 118

Nucleophilic substitution

Answer 119

Addition reaction

Answer 120

Electrophilic aromatic substitution

Answer 121

Free radical substitution

Answer 122

2-propanol

Answer 123

Tert-butanol

Answer 124

Tert-butanol

Answer 125

2-propanol

Answer 126

Alcohols have aromatic rings

Answer 127

Phenols undergo SN1 reactions

Answer 128

Alcohols react faster with bromine water

Answer 129

Phenols are more acidic than alcohols

Answer 130

Acetic acid

Answer 131

HCl/ZnCl₂

Answer 132

Na₂CO₃

Answer 133

Meta position

Answer 134

Para and ortho positions

Answer 135

Only para position

Answer 136

Only ortho position

Answer 137

Ethylene glycol

Answer 138

Salicylic acid

Answer 139

Acetic acid

Answer 140

Sulfonation

Answer 141

Friedel-Crafts alkylation

Answer 142

Dow’s process (chlorobenzene + NaOH)

Answer 143

Esterification

Answer 144

Dehydration to form alkene

Answer 145

Halogenation

Answer 146

Hydroboration

Answer 147

Reduction of carbonyl compounds

Answer 148

Hydrolysis of alkyl halides

Answer 149

Nitration of alkanes

Answer 150

Are more acidic

Answer 151

Are less soluble in water

Answer 152

Are aromatic

Answer 153

Do not show electrophilic aromatic substitution

Answer 154

Tollen’s test

Answer 155

Ferric chloride test

Answer 156

Lucas test

Answer 157

Benedict’s test

Answer 158

High molecular weight

Answer 159

Resonance stabilization of phenoxide ion

Answer 160

High boiling point

Answer 161

Solubility in water

Answer 162

Tertiary alcohol

Answer 163

Secondary alcohol

Answer 164

Primary alcohol

Answer 165

2-propanol

Answer 166

Tert-butanol

Answer 167

Ethylene glycol

Answer 168

m-Nitrophenol

Answer 169

Nitrobenzene

Answer 170

o-Nitrophenol

Answer 171

2-propanol

Answer 172

Immediately at room temperature

Answer 173

Not at all

Answer 174

With heating only

Answer 175

Alcohols have aromatic rings

Answer 176

Phenols undergo SN1 reactions

Answer 177

Alcohols react faster with bromine water

Answer 178

Phenols are more acidic than alcohols

Answer 179

Are more acidic

Answer 180

Are aromatic

Answer 181

Are less soluble in water

Answer 182

Do not show electrophilic aromatic substitution

Answer 183

Phenyl chloride

Answer 184

Sodium phenoxide

Answer 185

Benzyl alcohol

Answer 186

Hydroxybenzene

Answer 187

Benzene hydroxide

Answer 188

Sulfonation

Answer 189

Friedel-Crafts alkylation

Answer 190

Dow’s process (chlorobenzene + NaOH)

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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