Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

1. Alcohols react with carboxylic acids to form:

Question 2

2. Phenol reacts with acetic anhydride to form:

Question 3

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

Answer

Tert-butanol

Answer

2-propanol

Question 4

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

Answer

2-propanol

Question 5

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

Question 6

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

Answer

Halogenation

Answer

Dehydration to form alkene

Answer

Esterification

Question 7

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 8

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

Answer

Acetaldehyde

Answer

Acetic anhydride

Answer

Ethyl acetate

Question 9

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

Question 10

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

Answer

2-propanol

Answer

Tert-butanol

Question 11

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

Question 12

12. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 13

13. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Question 14

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

Question 15

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

Answer

Free radical substitution

Answer

Electrophilic aromatic substitution

Answer

Nucleophilic substitution

Answer

Addition reaction

Question 16

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

Question 17

17. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Sulfuric acid

Question 18

18. 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 19

19. Which of the following is most acidic?

Question 20

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 21

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

Answer

Alcohols have higher boiling point

Answer

Alcohols are colored

Answer

Phenols form ketones

Answer

Phenols give violet color with FeCl₃

Question 22

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

Answer

Acetic acid

Question 23

23. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 24

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

Question 25

25. What is the IUPAC name of phenol?

Answer

Hydroxybenzene

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Question 26

26. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 27

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

Answer

Reduction of carbonyl compounds

Answer

Hydrolysis of alkyl halides

Answer

Hydroboration

Answer

Nitration of alkanes

Question 28

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

Answer

Tert-butanol

Answer

2-propanol

Question 29

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

Answer

2-propanol

Answer

Tert-butanol

Question 30

30. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 31

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

Answer

Hydroboration

Answer

Reduction of carbonyl compounds

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Question 32

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

Answer

2-propanol

Question 33

33. What functional group is present in alcohols?

Question 34

34. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

CH₃CH(OH)CH₃

Answer

(CH₃)₃COH

Question 35

35. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Question 36

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

Answer

o-Nitrophenol

Answer

m-Nitrophenol

Answer

Nitrobenzene

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. Alcohols react with carboxylic acids to form:

Question 39

39. What functional group is present in alcohols?

Question 40

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

Question 41

41. Phenol is more acidic than alcohol due to:

Answer

High molecular weight

Answer

High boiling point

Answer

Resonance stabilization of phenoxide ion

Answer

Solubility in water

Question 42

42. Which is more reactive towards electrophilic substitution?

Question 43

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

Answer

Meta position

Answer

Only ortho position

Answer

Only para position

Answer

Para and ortho positions

Question 44

44. Which of the following statements is true?

Answer

Alcohols have aromatic rings

Answer

Phenols are more acidic than alcohols

Answer

Alcohols react faster with bromine water

Answer

Phenols undergo SN1 reactions

Question 45

45. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

4-bromophenol

Answer

Benzyl bromide

Answer

2-bromophenol

Question 46

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

Answer

Ethylene glycol

Question 47

47. Which is more reactive towards electrophilic substitution?

Question 48

48. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 49

49. The –OH group in phenol makes it:

Answer

Electron-donating

Answer

Electrically neutral

Answer

Electron-withdrawing

Question 50

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

Answer

Ferric chloride test

Answer

Tollen’s test

Answer

Lucas test

Answer

Benedict’s test

Question 51

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

Answer

Salicylic acid

Answer

Acetic acid

Question 52

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

Answer

Dehydration to form alkene

Answer

Esterification

Answer

Halogenation

Question 53

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

Answer

Alcohols have aromatic rings

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols contain carbonyl groups

Answer

Phenols are saturated

Question 54

54. Which of the following is most acidic?

Question 55

55. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Answer

Benzene hydroxide

Question 56

56. Phenol reacts with acetic anhydride to form:

Question 57

57. Which type of alcohol forms esters most readily?

Question 58

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

Question 59

59. Which compound is more acidic?

Question 60

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

Answer

Esterification

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Question 61

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

Question 62

62. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Question 63

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

Question 64

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

Answer

Ethylene glycol

Answer 118

Ethyl alcohol

Answer 119

Phenols have –OH directly bonded to benzene

Answer 120

Phenols are saturated

Answer 121

Alcohols have aromatic rings

Answer 122

Alcohols contain carbonyl groups

Answer 123

Propan-1-ol

Answer 124

Benedict’s test

Answer 125

Ferric chloride test

Answer 126

Lucas test

Answer 127

Tollen’s test

Answer 128

Tert-butanol

Answer 129

2-propanol

Answer 130

Tert-butanol

Answer 131

2-propanol

Answer 132

Phenols give violet color with FeCl₃

Answer 133

Phenols form ketones

Answer 134

Alcohols are colored

Answer 135

Alcohols have higher boiling point

Answer 136

Solubility in water

Answer 137

High boiling point

Answer 138

High molecular weight

Answer 139

Resonance stabilization of phenoxide ion

Answer 140

Electron-donating

Answer 141

Electrically neutral

Answer 142

Electron-withdrawing

Answer 143

Electrophilic aromatic substitution

Answer 144

Free radical substitution

Answer 145

Nucleophilic substitution

Answer 146

Addition reaction

Answer 147

Acetaldehyde

Answer 148

Acetic anhydride

Answer 149

Ethyl acetate

Answer 150

Acetic acid

Answer 151

Primary alcohol

Answer 152

Secondary alcohol

Answer 153

Tertiary alcohol

Answer 154

m-Nitrophenol

Answer 155

Nitrobenzene

Answer 156

o-Nitrophenol

Answer 157

Benzyl alcohol

Answer 158

Benzyl alcohol

Answer 159

Are less soluble in water

Answer 160

Are aromatic

Answer 161

Do not show electrophilic aromatic substitution

Answer 162

Are more acidic

Answer 163

Acetic acid

Answer 164

Salicylic acid

Answer 165

Tert-butanol

Answer 166

2-propanol

Answer 167

Quaternary

Answer 168

Immediately at room temperature

Answer 169

With heating only

Answer 170

Not at all

Answer 171

Ethyl alcohol

Answer 172

Phenyl chloride

Answer 173

Sodium phenoxide

Answer 174

Phenols undergo SN1 reactions

Answer 175

Phenols are more acidic than alcohols

Answer 176

Alcohols react faster with bromine water

Answer 177

Alcohols have aromatic rings

Answer 178

Tert-butanol

Answer 179

2-propanol

Answer 180

Hydrochloric acid

Answer 181

Nitric acid

Answer 182

Sulfuric acid

Answer 183

Acetic acid

Answer 184

Dehydration

Answer 185

Friedel-Crafts alkylation

Answer 186

Esterification

Answer 187

Are less soluble in water

Answer 188

Do not show electrophilic aromatic substitution

Answer 189

Are more acidic

Answer 190

Are aromatic

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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