Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

Acetaldehyde

Answer

Acetic anhydride

Answer

Ethyl acetate

Question 2

2. Which is more reactive towards electrophilic substitution?

Question 3

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 4

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

Answer

Only ortho position

Answer

Para and ortho positions

Answer

Only para position

Answer

Meta position

Question 5

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

Question 6

6. 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 7

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

Answer

Alcohols have aromatic rings

Answer

Alcohols contain carbonyl groups

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Question 8

8. Which type of alcohol is isopropyl alcohol?

Question 9

9. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

(CH₃)₃COH

Answer

CH₃CH₂OH

Question 10

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

Answer

Esterification

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Question 11

11. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Question 12

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

Question 13

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

Answer

Meta position

Answer

Only para position

Answer

Only ortho position

Answer

Para and ortho positions

Question 14

14. Which is more reactive towards electrophilic substitution?

Question 15

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

Question 16

16. 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 17

17. Which compound is more acidic?

Question 18

18. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 19

19. Which of the following is most acidic?

Question 20

20. Which acid is used in esterification of alcohols?

Answer

Acetic acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Question 21

21. Which of the following is most acidic?

Question 22

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

Answer

Ethyl acetate

Answer

Acetaldehyde

Answer

Acetic anhydride

Question 23

23. Phenol reacts with acetic anhydride to form:

Question 24

24. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 25

25. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electron-donating

Answer

Electrically neutral

Question 26

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

Answer

Tollen’s test

Answer

Ferric chloride test

Answer

Lucas test

Answer

Benedict’s test

Question 27

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

Answer

2-propanol

Question 28

28. Alcohols differ from phenols in that alcohols:

Answer

Are aromatic

Answer

Do not show electrophilic aromatic substitution

Answer

Are less soluble in water

Answer

Are more acidic

Question 29

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 30

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

Answer

Salicylic acid

Answer

Acetic acid

Question 31

31. What functional group is present in alcohols?

Question 32

32. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 33

33. Which type of alcohol is isopropyl alcohol?

Question 34

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

Answer

Reduction of carbonyl compounds

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Answer

Hydroboration

Question 35

35. Phenol is more acidic than alcohol due to:

Answer

Resonance stabilization of phenoxide ion

Answer

High boiling point

Answer

Solubility in water

Answer

High molecular weight

Question 36

36. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 37

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

Answer

Phenols form ketones

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Question 38

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

Question 39

39. Which of the following statements is true?

Answer

Phenols undergo SN1 reactions

Answer

Alcohols have aromatic rings

Answer

Phenols are more acidic than alcohols

Answer

Alcohols react faster with bromine water

Question 40

40. 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 41

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

Answer

Ethyl alcohol

Question 42

42. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 43

43. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 44

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

Answer

Acetic acid

Question 45

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

Answer

Alcohols have aromatic rings

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Answer

Alcohols contain carbonyl groups

Question 46

46. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 47

47. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 48

48. Which reaction forms phenol from benzene?

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Question 49

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

Question 50

50. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Question 51

51. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Nitric acid

Question 52

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

Question 53

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

Answer

Ethyl alcohol

Question 54

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

Answer

2-propanol

Question 55

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

Question 56

56. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

With heating only

Answer

Immediately at room temperature

Question 57

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

Answer

Tert-butanol

Answer

2-propanol

Question 58

58. What functional group is present in alcohols?

Question 59

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

Question 60

60. Which type of alcohol forms esters most readily?

Question 61

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

Answer

Free radical substitution

Answer

Electrophilic aromatic substitution

Answer

Addition reaction

Answer

Nucleophilic substitution

Question 62

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

Answer

2-propanol

Answer

Tert-butanol

Question 63

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

Question 64

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

Answer

Nitrobenzene

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Answer 123

Primary alcohol

Answer 124

Tertiary alcohol

Answer 125

Secondary alcohol

Answer 126

Electron-withdrawing

Answer 127

Electrically neutral

Answer 128

Electron-donating

Answer 129

Benzene hydroxide

Answer 130

Hydroxybenzene

Answer 131

Benzyl alcohol

Answer 132

2-propanol

Answer 133

Tert-butanol

Answer 134

Alcohols have aromatic rings

Answer 135

Alcohols react faster with bromine water

Answer 136

Phenols undergo SN1 reactions

Answer 137

Phenols are more acidic than alcohols

Answer 138

Benzyl alcohol

Answer 139

Ethylene glycol

Answer 140

2-bromophenol

Answer 141

2,4,6-tribromophenol

Answer 142

Benzyl bromide

Answer 143

4-bromophenol

Answer 144

o-Nitrophenol

Answer 145

m-Nitrophenol

Answer 146

Nitrobenzene

Answer 147

Tert-butanol

Answer 148

2-propanol

Answer 149

Tert-butanol

Answer 150

2-propanol

Answer 151

Benzene hydroxide

Answer 152

Hydroxybenzene

Answer 153

Benzyl alcohol

Answer 154

Are less soluble in water

Answer 155

Are more acidic

Answer 156

Do not show electrophilic aromatic substitution

Answer 157

Are aromatic

Answer 158

Halogenation

Answer 159

Dehydration to form alkene

Answer 160

Esterification

Answer 161

2-propanol

Answer 162

Tert-butanol

Answer 163

Ethylene glycol

Answer 164

4-bromophenol

Answer 165

Benzyl bromide

Answer 166

2,4,6-tribromophenol

Answer 167

2-bromophenol

Answer 168

Acetic acid

Answer 169

Salicylic acid

Answer 170

Phenyl chloride

Answer 171

Sodium phenoxide

Answer 172

Halogenation

Answer 173

Dehydration to form alkene

Answer 174

Esterification

Answer 175

Tert-butanol

Answer 176

2-propanol

Answer 177

2-propanol

Answer 178

Tert-butanol

Answer 179

Primary alcohol

Answer 180

Secondary alcohol

Answer 181

Tertiary alcohol

Answer 182

Addition reaction

Answer 183

Free radical substitution

Answer 184

Electrophilic aromatic substitution

Answer 185

Nucleophilic substitution

Answer 186

Alcohols are colored

Answer 187

Alcohols have higher boiling point

Answer 188

Phenols form ketones

Answer 189

Phenols give violet color with FeCl₃

Answer 190

Acetic acid

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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