Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

1. Which compound is more acidic?

Question 2

2. Alcohols react with carboxylic acids to form:

Question 3

3. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Question 4

4. Phenol reacts with bromine water to give:

Answer

Benzyl bromide

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

4-bromophenol

Question 5

5. Which is more reactive towards electrophilic substitution?

Question 6

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

Answer

Tollen’s test

Answer

Lucas test

Answer

Benedict’s test

Answer

Ferric chloride test

Question 7

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 8

8. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Question 9

9. Which type of alcohol is isopropyl alcohol?

Question 10

10. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 11

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

Question 12

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

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Question 13

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

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Question 14

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

Question 15

15. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 16

16. Which of the following is most acidic?

Question 17

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

Answer

Alcohols contain carbonyl groups

Answer

Phenols are saturated

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols have aromatic rings

Question 18

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

Answer

Secondary alcohol

Answer

Tertiary alcohol

Answer

Primary alcohol

Question 19

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

Answer

Tert-butanol

Answer

2-propanol

Question 20

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

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Answer

Nitrobenzene

Question 21

21. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 22

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

Question 23

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 24

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

Answer

2-propanol

Question 25

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

Question 26

26. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Nitric acid

Answer

Acetic acid

Answer

Hydrochloric acid

Question 27

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

Answer

Tert-butanol

Answer

2-propanol

Question 28

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

Answer

Only para position

Answer

Only ortho position

Answer

Para and ortho positions

Answer

Meta position

Question 29

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

Answer

Salicylic acid

Answer

Acetic acid

Question 30

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

Answer

Tert-butanol

Answer

2-propanol

Question 31

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

Answer

Ethylene glycol

Question 32

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

Answer

Addition reaction

Answer

Free radical substitution

Answer

Nucleophilic substitution

Answer

Electrophilic aromatic substitution

Question 33

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

Answer

2-propanol

Answer

Tert-butanol

Question 34

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

Question 35

35. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 36

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

Question 37

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

Answer

Hydroboration

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Answer

Hydrolysis of alkyl halides

Question 38

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

Answer

Salicylic acid

Answer

Acetic acid

Question 39

39. Which type of alcohol forms esters most readily?

Question 40

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

Question 41

41. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 42

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

Answer

Only para position

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Meta position

Question 43

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

Question 44

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

Answer

Tert-butanol

Answer

2-propanol

Question 45

45. What functional group is present in alcohols?

Question 46

46. Which of the following statements is true?

Answer

Phenols are more acidic than alcohols

Answer

Alcohols react faster with bromine water

Answer

Alcohols have aromatic rings

Answer

Phenols undergo SN1 reactions

Question 47

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

Question 48

48. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 49

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

Answer

Dehydration

Answer

Esterification

Answer

Friedel-Crafts alkylation

Question 50

50. 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 51

51. Which compound is more acidic?

Question 52

52. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 53

53. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 54

54. Which reaction forms phenol from benzene?

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Question 55

55. Which type of alcohol is isopropyl alcohol?

Question 56

56. Phenol is more acidic than alcohol due to:

Answer

High boiling point

Answer

Resonance stabilization of phenoxide ion

Answer

High molecular weight

Answer

Solubility in water

Question 57

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

Answer

2-propanol

Question 58

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

Answer

Ethyl alcohol

Question 59

59. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-withdrawing

Answer

Electron-donating

Question 60

60. Phenol reacts with acetic anhydride to form:

Question 61

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

Answer

Phenols give violet color with FeCl₃

Answer

Phenols form ketones

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Question 62

62. Phenol reacts with bromine water to give:

Answer

2-bromophenol

Answer

4-bromophenol

Answer

Benzyl bromide

Answer

2,4,6-tribromophenol

Question 63

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

Question 64

64. Which of the following is most acidic?

Answer 119

2-propanol

Answer 120

Tert-butanol

Answer 121

Acetic anhydride

Answer 122

Acetaldehyde

Answer 123

Ethyl acetate

Answer 124

Phenols undergo SN1 reactions

Answer 125

Alcohols have aromatic rings

Answer 126

Phenols are more acidic than alcohols

Answer 127

Alcohols react faster with bromine water

Answer 128

Benzene hydroxide

Answer 129

Hydroxybenzene

Answer 130

Benzyl alcohol

Answer 131

High molecular weight

Answer 132

Solubility in water

Answer 133

High boiling point

Answer 134

Resonance stabilization of phenoxide ion

Answer 135

Ethyl alcohol

Answer 136

Halogenation

Answer 137

Esterification

Answer 138

Dehydration to form alkene

Answer 139

CH₃CH₂OH

Answer 140

(CH₃)₃COH

Answer 141

CH₃CH(OH)CH₃

Answer 142

Sodium phenoxide

Answer 143

Phenyl chloride

Answer 144

Nucleophilic substitution

Answer 145

Addition reaction

Answer 146

Free radical substitution

Answer 147

Electrophilic aromatic substitution

Answer 148

Ethyl acetate

Answer 149

Acetic anhydride

Answer 150

Acetaldehyde

Answer 151

Acetic acid

Answer 152

Esterification

Answer 153

Halogenation

Answer 154

Dehydration to form alkene

Answer 155

2-propanol

Answer 156

Tert-butanol

Answer 157

Are less soluble in water

Answer 158

Are more acidic

Answer 159

Are aromatic

Answer 160

Do not show electrophilic aromatic substitution

Answer 161

Electrically neutral

Answer 162

Electron-withdrawing

Answer 163

Electron-donating

Answer 164

Propan-1-ol

Answer 165

Are more acidic

Answer 166

Are aromatic

Answer 167

Are less soluble in water

Answer 168

Do not show electrophilic aromatic substitution

Answer 169

Acetic acid

Answer 170

Dehydration

Answer 171

Friedel-Crafts alkylation

Answer 172

Esterification

Answer 173

Ethylene glycol

Answer 174

Quaternary

Answer 175

Dow’s process (chlorobenzene + NaOH)

Answer 176

Sulfonation

Answer 177

Friedel-Crafts alkylation

Answer 178

Hydroboration

Answer 179

Nitration of alkanes

Answer 180

Hydrolysis of alkyl halides

Answer 181

Reduction of carbonyl compounds

Answer 182

Tert-butanol

Answer 183

2-propanol

Answer 184

Nitric acid

Answer 185

Sulfuric acid

Answer 186

Acetic acid

Answer 187

Hydrochloric acid

Answer 188

o-Nitrophenol

Answer 189

m-Nitrophenol

Answer 190

Nitrobenzene

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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