Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

1. The –OH group in phenol makes it:

Answer

Electrically neutral

Answer

Electron-donating

Answer

Electron-withdrawing

Question 2

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

Answer

2-propanol

Question 3

3. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 4

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

Question 5

5. Which is more reactive towards electrophilic substitution?

Question 6

6. Which of the following is most acidic?

Question 7

7. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 8

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

Answer

Acetic acid

Answer

Salicylic acid

Question 9

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

Question 10

10. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Answer

Benzyl alcohol

Question 11

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

Answer

Nucleophilic substitution

Answer

Free radical substitution

Answer

Electrophilic aromatic substitution

Answer

Addition reaction

Question 12

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

Answer

Ethylene glycol

Question 13

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

Answer

Hydroboration

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Answer

Reduction of carbonyl compounds

Question 14

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 15

15. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Sulfonation

Answer

Friedel-Crafts alkylation

Question 16

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

Answer

m-Nitrophenol

Answer

Nitrobenzene

Answer

o-Nitrophenol

Question 17

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

Answer

m-Nitrophenol

Answer

Nitrobenzene

Answer

o-Nitrophenol

Question 18

18. The –OH group in phenol makes it:

Answer

Electron-donating

Answer

Electron-withdrawing

Answer

Electrically neutral

Question 19

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

Question 20

20. Which is more reactive towards electrophilic substitution?

Question 21

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

Answer

2-propanol

Question 22

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

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Question 23

23. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

4-bromophenol

Answer

Benzyl bromide

Answer

2-bromophenol

Question 24

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

Answer

Acetic acid

Answer

Salicylic acid

Question 25

25. Which compound is more acidic?

Question 26

26. 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 27

27. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 28

28. What functional group is present in alcohols?

Question 29

29. Which type of alcohol is isopropyl alcohol?

Question 30

30. Which acid is used in esterification of alcohols?

Answer

Hydrochloric acid

Answer

Nitric acid

Answer

Acetic acid

Answer

Sulfuric acid

Question 31

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

Question 32

32. Which type of alcohol is isopropyl alcohol?

Question 33

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

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Only para position

Answer

Meta position

Question 34

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

Answer

Acetic acid

Question 35

35. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Question 36

36. Alcohols react with carboxylic acids to form:

Question 37

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

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Answer

Alcohols are colored

Question 38

38. Which of the following is most acidic?

Question 39

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 40

40. Phenol is more acidic than alcohol due to:

Answer

High boiling point

Answer

High molecular weight

Answer

Resonance stabilization of phenoxide ion

Answer

Solubility in water

Question 41

41. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 42

42. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 43

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

Answer

2-propanol

Answer

Tert-butanol

Question 44

44. Which type of alcohol forms esters most readily?

Question 45

45. Which of the following statements is true?

Answer

Alcohols have aromatic rings

Answer

Phenols undergo SN1 reactions

Answer

Phenols are more acidic than alcohols

Answer

Alcohols react faster with bromine water

Question 46

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

Answer

Acetic acid

Question 47

47. 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 48

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

Question 49

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

Answer

Tert-butanol

Answer

2-propanol

Question 50

50. Phenol is more acidic than alcohol due to:

Answer

Resonance stabilization of phenoxide ion

Answer

Solubility in water

Answer

High molecular weight

Answer

High boiling point

Question 51

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

Answer

Free radical substitution

Answer

Addition reaction

Answer

Nucleophilic substitution

Answer

Electrophilic aromatic substitution

Question 52

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

Answer

2-propanol

Answer

Tert-butanol

Question 53

53. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 54

54. 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 55

55. 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 56

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

Question 57

57. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

With heating only

Answer

Immediately at room temperature

Question 58

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

Answer

Halogenation

Answer

Esterification

Answer

Dehydration to form alkene

Question 59

59. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 60

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

Answer

Tert-butanol

Answer

2-propanol

Question 61

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

Answer

2-propanol

Answer

Tert-butanol

Question 62

62. Which reaction forms phenol from benzene?

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Question 63

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

Answer

2-propanol

Answer

Tert-butanol

Question 64

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

Answer

Halogenation

Answer

Dehydration to form alkene

Answer

Esterification

Answer 131

Benzene hydroxide

Answer 132

Hydroxybenzene

Answer 133

Benzyl alcohol

Answer 134

Ethylene glycol

Answer 135

Phenols are saturated

Answer 136

Alcohols have aromatic rings

Answer 137

Alcohols contain carbonyl groups

Answer 138

Phenols have –OH directly bonded to benzene

Answer 139

Ethyl alcohol

Answer 140

Primary alcohol

Answer 141

Tertiary alcohol

Answer 142

Secondary alcohol

Answer 143

CH₃CH(OH)CH₃

Answer 144

CH₃CH₂OH

Answer 145

(CH₃)₃COH

Answer 146

Ethyl alcohol

Answer 147

CH₃CH(OH)CH₃

Answer 148

(CH₃)₃COH

Answer 149

CH₃CH₂OH

Answer 150

Benedict’s test

Answer 151

Lucas test

Answer 152

Tollen’s test

Answer 153

Ferric chloride test

Answer 154

Do not show electrophilic aromatic substitution

Answer 155

Are less soluble in water

Answer 156

Are more acidic

Answer 157

Are aromatic

Answer 158

Hydrolysis of alkyl halides

Answer 159

Reduction of carbonyl compounds

Answer 160

Hydroboration

Answer 161

Nitration of alkanes

Answer 162

2-propanol

Answer 163

Tert-butanol

Answer 164

Sodium phenoxide

Answer 165

Phenyl chloride

Answer 166

Propan-1-ol

Answer 167

2,4,6-tribromophenol

Answer 168

2-bromophenol

Answer 169

Benzyl bromide

Answer 170

4-bromophenol

Answer 171

Na₂CO₃

Answer 172

HCl/ZnCl₂

Answer 173

Friedel-Crafts alkylation

Answer 174

Esterification

Answer 175

Dehydration

Answer 176

Tert-butanol

Answer 177

2-propanol

Answer 178

Tertiary alcohol

Answer 179

Primary alcohol

Answer 180

Secondary alcohol

Answer 181

Phenols have –OH directly bonded to benzene

Answer 182

Alcohols contain carbonyl groups

Answer 183

Alcohols have aromatic rings

Answer 184

Phenols are saturated

Answer 185

Acetaldehyde

Answer 186

Ethyl acetate

Answer 187

Acetic anhydride

Answer 188

Acetaldehyde

Answer 189

Acetic anhydride

Answer 190

Ethyl acetate

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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