Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

2-propanol

Question 2

2. Which acid is used in esterification of alcohols?

Answer

Acetic acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Question 3

3. Which compound is more acidic?

Question 4

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

Question 5

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

Answer

Acetic acid

Answer

Salicylic acid

Question 6

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

Answer

Tert-butanol

Answer

2-propanol

Question 7

7. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Question 8

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

Answer

Nitrobenzene

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Question 9

9. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Nitric acid

Question 10

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

Answer

Esterification

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Question 11

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

Answer

Halogenation

Answer

Esterification

Answer

Dehydration to form alkene

Question 12

12. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 13

13. 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 14

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

Answer

Acetaldehyde

Answer

Ethyl acetate

Answer

Acetic anhydride

Question 15

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

Answer

Ethylene glycol

Question 16

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

Question 17

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

Answer

2-propanol

Question 18

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

Question 19

19. Alcohols react with carboxylic acids to form:

Question 20

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

Answer

Acetic acid

Question 21

21. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

4-bromophenol

Answer

Benzyl bromide

Question 22

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

Answer

2-propanol

Answer

Tert-butanol

Question 23

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

Answer

Ethyl alcohol

Question 24

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

Answer

Tollen’s test

Answer

Benedict’s test

Answer

Ferric chloride test

Answer

Lucas test

Question 25

25. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 26

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

Question 27

27. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Question 28

28. Alcohols differ from phenols in that alcohols:

Answer

Are aromatic

Answer

Are less soluble in water

Answer

Are more acidic

Answer

Do not show electrophilic aromatic substitution

Question 29

29. Which of the following statements is true?

Answer

Alcohols react faster with bromine water

Answer

Phenols undergo SN1 reactions

Answer

Phenols are more acidic than alcohols

Answer

Alcohols have aromatic rings

Question 30

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

Answer

Secondary alcohol

Answer

Tertiary alcohol

Answer

Primary alcohol

Question 31

31. Which is more reactive towards electrophilic substitution?

Question 32

32. 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 33

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

Answer

Ethyl alcohol

Question 34

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

Question 35

35. What functional group is present in alcohols?

Question 36

36. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 37

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

Answer

Acetic acid

Question 38

38. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 39

39. Phenol reacts with acetic anhydride to form:

Question 40

40. What is the IUPAC name of phenol?

Answer

Hydroxybenzene

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Question 41

41. Phenol reacts with acetic anhydride to form:

Question 42

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 43

43. Alcohols differ from phenols in that alcohols:

Answer

Are aromatic

Answer

Are more acidic

Answer

Are less soluble in water

Answer

Do not show electrophilic aromatic substitution

Question 44

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

Answer

Alcohols have aromatic rings

Answer

Phenols are saturated

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols contain carbonyl groups

Question 45

45. 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 46

46. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 47

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

Answer

Tert-butanol

Answer

2-propanol

Question 48

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 49

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

Answer

Tert-butanol

Answer

2-propanol

Question 50

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

Question 51

51. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-donating

Answer

Electron-withdrawing

Question 52

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

Answer

Tert-butanol

Answer

2-propanol

Question 53

53. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

CH₃CH(OH)CH₃

Answer

(CH₃)₃COH

Question 54

54. Which compound is more acidic?

Question 55

55. Which reaction forms phenol from benzene?

Answer

Sulfonation

Answer

Friedel-Crafts alkylation

Answer

Dow’s process (chlorobenzene + NaOH)

Question 56

56. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 57

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 58

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

Answer

o-Nitrophenol

Answer

m-Nitrophenol

Answer

Nitrobenzene

Question 59

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 60

60. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 61

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

Question 62

62. What functional group is present in alcohols?

Question 63

63. Alcohols react with carboxylic acids to form:

Question 64

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

Answer

Acetic acid

Answer

Salicylic acid

Answer 125

Tert-butanol

Answer 126

2-propanol

Answer 127

Phenols have –OH directly bonded to benzene

Answer 128

Alcohols contain carbonyl groups

Answer 129

Phenols are saturated

Answer 130

Alcohols have aromatic rings

Answer 131

Electrophilic aromatic substitution

Answer 132

Nucleophilic substitution

Answer 133

Free radical substitution

Answer 134

Addition reaction

Answer 135

Benzyl alcohol

Answer 136

Hydroxybenzene

Answer 137

Benzene hydroxide

Answer 138

Tert-butanol

Answer 139

2-propanol

Answer 140

Benedict’s test

Answer 141

Ferric chloride test

Answer 142

Tollen’s test

Answer 143

Lucas test

Answer 144

Nitration of alkanes

Answer 145

Hydrolysis of alkyl halides

Answer 146

Reduction of carbonyl compounds

Answer 147

Hydroboration

Answer 148

Dehydration to form alkene

Answer 149

Halogenation

Answer 150

Esterification

Answer 151

Phenols undergo SN1 reactions

Answer 152

Alcohols have aromatic rings

Answer 153

Phenols are more acidic than alcohols

Answer 154

Alcohols react faster with bromine water

Answer 155

Propan-1-ol

Answer 156

Phenols give violet color with FeCl₃

Answer 157

Phenols form ketones

Answer 158

Alcohols have higher boiling point

Answer 159

Alcohols are colored

Answer 160

Quaternary

Answer 161

Ethyl acetate

Answer 162

Acetaldehyde

Answer 163

Acetic anhydride

Answer 164

High molecular weight

Answer 165

Solubility in water

Answer 166

High boiling point

Answer 167

Resonance stabilization of phenoxide ion

Answer 168

2-propanol

Answer 169

Tert-butanol

Answer 170

Electrophilic aromatic substitution

Answer 171

Nucleophilic substitution

Answer 172

Addition reaction

Answer 173

Free radical substitution

Answer 174

Ethylene glycol

Answer 175

Benzyl bromide

Answer 176

2-bromophenol

Answer 177

4-bromophenol

Answer 178

2,4,6-tribromophenol

Answer 179

Electrically neutral

Answer 180

Electron-withdrawing

Answer 181

Electron-donating

Answer 182

Benzyl alcohol

Answer 183

Only ortho position

Answer 184

Meta position

Answer 185

Only para position

Answer 186

Para and ortho positions

Answer 187

Para and ortho positions

Answer 188

Only para position

Answer 189

Meta position

Answer 190

Only ortho position

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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