Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

2-propanol

Answer

Tert-butanol

Question 2

2. Which compound is more acidic?

Question 3

3. Which of the following is most acidic?

Question 4

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

Question 5

5. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Question 6

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

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Answer

Hydroboration

Answer

Reduction of carbonyl compounds

Question 7

7. Alcohols differ from phenols in that alcohols:

Answer

Are less soluble in water

Answer

Are aromatic

Answer

Do not show electrophilic aromatic substitution

Answer

Are more acidic

Question 8

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

Question 9

9. Which is more reactive towards electrophilic substitution?

Question 10

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

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Answer

Esterification

Question 11

11. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 12

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

Question 13

13. Which acid is used in esterification of alcohols?

Answer

Acetic acid

Answer

Nitric acid

Answer

Sulfuric acid

Answer

Hydrochloric acid

Question 14

14. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Question 15

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

Answer

Acetic acid

Question 16

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

Question 17

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

Answer

Tert-butanol

Answer

2-propanol

Question 18

18. Phenol is more acidic than alcohol due to:

Answer

High molecular weight

Answer

Resonance stabilization of phenoxide ion

Answer

Solubility in water

Answer

High boiling point

Question 19

19. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 20

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

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Meta position

Answer

Only para position

Question 21

21. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 22

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

Question 23

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

Answer

2-propanol

Answer

Tert-butanol

Question 24

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

Question 25

25. Which type of alcohol is isopropyl alcohol?

Question 26

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

Answer

Tert-butanol

Answer

2-propanol

Question 27

27. 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 28

28. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 29

29. Alcohols react with carboxylic acids to form:

Question 30

30. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 31

31. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Question 32

32. Which type of alcohol is isopropyl alcohol?

Question 33

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

Answer

Salicylic acid

Answer

Acetic acid

Question 34

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

Answer

Tert-butanol

Answer

2-propanol

Question 35

35. Phenol reacts with acetic anhydride to form:

Question 36

36. Which of the following statements is true?

Answer

Phenols undergo SN1 reactions

Answer

Phenols are more acidic than alcohols

Answer

Alcohols have aromatic rings

Answer

Alcohols react faster with bromine water

Question 37

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

Question 38

38. Alcohols react with carboxylic acids to form:

Question 39

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

Question 40

40. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

4-bromophenol

Answer

Benzyl bromide

Question 41

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

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Answer

Phenols are saturated

Answer

Phenols have –OH directly bonded to benzene

Question 42

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

Question 43

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

Answer

Primary alcohol

Answer

Tertiary alcohol

Answer

Secondary alcohol

Question 44

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

Question 45

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 46

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 47

47. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

Not at all

Answer

With heating only

Question 48

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

Answer

2-propanol

Question 49

49. In the Lucas test, tertiary alcohols react:

Answer

With heating only

Answer

Not at all

Answer

Immediately at room temperature

Question 50

50. Which of the following statements is true?

Answer

Alcohols have aromatic rings

Answer

Phenols are more acidic than alcohols

Answer

Phenols undergo SN1 reactions

Answer

Alcohols react faster with bromine water

Question 51

51. 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 52

52. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Sulfonation

Question 53

53. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-withdrawing

Answer

Electron-donating

Question 54

54. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Question 55

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

Answer

o-Nitrophenol

Answer

Nitrobenzene

Answer

m-Nitrophenol

Question 56

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

Question 57

57. Phenol reacts with acetic anhydride to form:

Question 58

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

Answer

Acetic acid

Answer

Salicylic acid

Question 59

59. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 60

60. Which compound is more acidic?

Question 61

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

Answer

Secondary alcohol

Answer

Tertiary alcohol

Answer

Primary alcohol

Question 62

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

Answer

Only ortho position

Answer

Only para position

Answer

Meta position

Answer

Para and ortho positions

Question 63

63. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 64

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

Answer

Ethyl alcohol

Answer 117

Hydroboration

Answer 118

Hydrolysis of alkyl halides

Answer 119

Nitration of alkanes

Answer 120

Reduction of carbonyl compounds

Answer 121

Benzyl alcohol

Answer 122

2-propanol

Answer 123

Phenols form ketones

Answer 124

Phenols give violet color with FeCl₃

Answer 125

Alcohols are colored

Answer 126

Alcohols have higher boiling point

Answer 127

Esterification

Answer 128

Halogenation

Answer 129

Dehydration to form alkene

Answer 130

2-propanol

Answer 131

Tert-butanol

Answer 132

Solubility in water

Answer 133

High molecular weight

Answer 134

Resonance stabilization of phenoxide ion

Answer 135

High boiling point

Answer 136

Phenols give violet color with FeCl₃

Answer 137

Alcohols have higher boiling point

Answer 138

Alcohols are colored

Answer 139

Phenols form ketones

Answer 140

4-bromophenol

Answer 141

2-bromophenol

Answer 142

2,4,6-tribromophenol

Answer 143

Benzyl bromide

Answer 144

Electron-withdrawing

Answer 145

Electron-donating

Answer 146

Electrically neutral

Answer 147

Ferric chloride test

Answer 148

Tollen’s test

Answer 149

Benedict’s test

Answer 150

Lucas test

Answer 151

Addition reaction

Answer 152

Nucleophilic substitution

Answer 153

Electrophilic aromatic substitution

Answer 154

Free radical substitution

Answer 155

Ethylene glycol

Answer 156

2-propanol

Answer 157

Tert-butanol

Answer 158

CH₃CH₂OH

Answer 159

(CH₃)₃COH

Answer 160

CH₃CH(OH)CH₃

Answer 161

Sodium phenoxide

Answer 162

Phenyl chloride

Answer 163

Do not show electrophilic aromatic substitution

Answer 164

Are less soluble in water

Answer 165

Are more acidic

Answer 166

Are aromatic

Answer 167

Ethyl acetate

Answer 168

Acetaldehyde

Answer 169

Acetic anhydride

Answer 170

Ethyl alcohol

Answer 171

Acetic anhydride

Answer 172

Ethyl acetate

Answer 173

Acetaldehyde

Answer 174

Dehydration to form alkene

Answer 175

Esterification

Answer 176

Halogenation

Answer 177

Nucleophilic substitution

Answer 178

Addition reaction

Answer 179

Free radical substitution

Answer 180

Electrophilic aromatic substitution

Answer 181

o-Nitrophenol

Answer 182

m-Nitrophenol

Answer 183

Nitrobenzene

Answer 184

2-propanol

Answer 185

Tert-butanol

Answer 186

Ethylene glycol

Answer 187

Acetic acid

Answer 188

CH₃CH(OH)CH₃

Answer 189

CH₃CH₂OH

Answer 190

(CH₃)₃COH

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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