Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

Acetic acid

Answer

Salicylic acid

Question 2

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

Question 3

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

Answer

Nucleophilic substitution

Answer

Electrophilic aromatic substitution

Answer

Addition reaction

Answer

Free radical substitution

Question 4

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

Answer

Alcohols are colored

Answer

Phenols form ketones

Answer

Alcohols have higher boiling point

Answer

Phenols give violet color with FeCl₃

Question 5

5. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

CH₃CH(OH)CH₃

Answer

(CH₃)₃COH

Question 6

6. Which of the following statements is true?

Answer

Alcohols have aromatic rings

Answer

Phenols undergo SN1 reactions

Answer

Alcohols react faster with bromine water

Answer

Phenols are more acidic than alcohols

Question 7

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 8

8. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Sulfonation

Question 9

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

Answer

Friedel-Crafts alkylation

Answer

Esterification

Answer

Dehydration

Question 10

10. Which of the following is most acidic?

Question 11

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

Answer

Ethyl alcohol

Question 12

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

Answer

Acetic anhydride

Answer

Ethyl acetate

Answer

Acetaldehyde

Question 13

13. 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 14

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

Answer

Hydrolysis of alkyl halides

Answer

Nitration of alkanes

Answer

Hydroboration

Answer

Reduction of carbonyl compounds

Question 15

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

Answer

Phenols are saturated

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Question 16

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

Answer

Tert-butanol

Answer

2-propanol

Question 17

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

Answer

2-propanol

Answer

Tert-butanol

Question 18

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

Answer

Primary alcohol

Answer

Tertiary alcohol

Answer

Secondary alcohol

Question 19

19. Alcohols react with carboxylic acids to form:

Question 20

20. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

Benzyl bromide

Answer

4-bromophenol

Question 21

21. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Question 22

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

Question 23

23. Which type of alcohol is isopropyl alcohol?

Question 24

24. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 25

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

Answer

Acetic acid

Answer

Salicylic acid

Question 26

26. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 27

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

Answer

2-propanol

Question 28

28. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 29

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

Answer

Phenols are saturated

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Question 30

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

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Answer

Nitrobenzene

Question 31

31. Phenol reacts with bromine water to give:

Answer

4-bromophenol

Answer

2,4,6-tribromophenol

Answer

Benzyl bromide

Answer

2-bromophenol

Question 32

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

Question 33

33. 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 34

34. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Answer

Benzene hydroxide

Question 35

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

Answer

Tert-butanol

Answer

2-propanol

Question 36

36. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 37

37. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Sulfonation

Answer

Friedel-Crafts alkylation

Question 38

38. Which of the following is most acidic?

Question 39

39. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 40

40. Which type of alcohol forms esters most readily?

Question 41

41. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 42

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

Question 43

43. 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 44

44. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

With heating only

Answer

Immediately at room temperature

Question 45

45. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Acetic acid

Answer

Sulfuric acid

Answer

Hydrochloric acid

Question 46

46. What functional group is present in alcohols?

Question 47

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

Question 48

48. 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 49

49. Phenol reacts with acetic anhydride to form:

Question 50

50. Which is more reactive towards electrophilic substitution?

Question 51

51. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 52

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

Answer

Lucas test

Answer

Tollen’s test

Answer

Ferric chloride test

Answer

Benedict’s test

Question 53

53. 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 54

54. Which compound is more acidic?

Question 55

55. Alcohols react with carboxylic acids to form:

Question 56

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

Answer

Only para position

Answer

Only ortho position

Answer

Meta position

Answer

Para and ortho positions

Question 57

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

Question 58

58. Phenol reacts with acetic anhydride to form:

Question 59

59. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-donating

Answer

Electron-withdrawing

Question 60

60. Which type of alcohol forms esters most readily?

Question 61

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

Question 62

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

Answer

Halogenation

Answer

Esterification

Answer

Dehydration to form alkene

Question 63

63. 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 64

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

Answer

Acetaldehyde

Answer

Ethyl acetate

Answer

Acetic anhydride

Answer 132

Ethyl alcohol

Answer 133

Acetic acid

Answer 134

2-propanol

Answer 135

Tert-butanol

Answer 136

CH₃CH₂OH

Answer 137

(CH₃)₃COH

Answer 138

CH₃CH(OH)CH₃

Answer 139

Primary alcohol

Answer 140

Secondary alcohol

Answer 141

Tertiary alcohol

Answer 142

2-propanol

Answer 143

Tert-butanol

Answer 144

2-propanol

Answer 145

Tert-butanol

Answer 146

2-propanol

Answer 147

Hydrochloric acid

Answer 148

Acetic acid

Answer 149

Sulfuric acid

Answer 150

Nitric acid

Answer 151

Addition reaction

Answer 152

Free radical substitution

Answer 153

Electrophilic aromatic substitution

Answer 154

Nucleophilic substitution

Answer 155

Ethylene glycol

Answer 156

Nitrobenzene

Answer 157

o-Nitrophenol

Answer 158

m-Nitrophenol

Answer 159

Propan-1-ol

Answer 160

Acetic acid

Answer 161

Alcohols have higher boiling point

Answer 162

Alcohols are colored

Answer 163

Phenols form ketones

Answer 164

Phenols give violet color with FeCl₃

Answer 165

Only para position

Answer 166

Only ortho position

Answer 167

Para and ortho positions

Answer 168

Meta position

Answer 169

Halogenation

Answer 170

Dehydration to form alkene

Answer 171

Esterification

Answer 172

Electron-withdrawing

Answer 173

Electron-donating

Answer 174

Electrically neutral

Answer 175

Tollen’s test

Answer 176

Benedict’s test

Answer 177

Ferric chloride test

Answer 178

Lucas test

Answer 179

Phenyl chloride

Answer 180

Sodium phenoxide

Answer 181

Tert-butanol

Answer 182

2-propanol

Answer 183

Dehydration

Answer 184

Esterification

Answer 185

Friedel-Crafts alkylation

Answer 186

2-propanol

Answer 187

Tert-butanol

Answer 188

Ethylene glycol

Answer 189

HCl/ZnCl₂

Answer 190

Na₂CO₃

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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