Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Question 2

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

Answer

Phenols are saturated

Answer

Alcohols have aromatic rings

Answer

Alcohols contain carbonyl groups

Answer

Phenols have –OH directly bonded to benzene

Question 3

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

Question 4

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

Answer

Acetic acid

Answer

Salicylic acid

Question 5

5. Which of the following is most acidic?

Question 6

6. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Question 7

7. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Question 8

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

Answer

2-propanol

Answer

Tert-butanol

Question 9

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 10

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

Answer

Ethyl acetate

Answer

Acetic anhydride

Answer

Acetaldehyde

Question 11

11. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 12

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

Question 13

13. Alcohols react with carboxylic acids to form:

Question 14

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 15

15. Which is more reactive towards electrophilic substitution?

Question 16

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

Answer

Phenols are saturated

Answer

Alcohols contain carbonyl groups

Answer

Alcohols have aromatic rings

Answer

Phenols have –OH directly bonded to benzene

Question 17

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 18

18. Which compound is more acidic?

Question 19

19. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Sulfonation

Question 20

20. Which type of alcohol is isopropyl alcohol?

Question 21

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

Question 22

22. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electrically neutral

Answer

Electron-donating

Question 23

23. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 24

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

Answer

Only ortho position

Answer

Meta position

Answer

Only para position

Answer

Para and ortho positions

Question 25

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

Answer

Reduction of carbonyl compounds

Answer

Nitration of alkanes

Answer

Hydroboration

Answer

Hydrolysis of alkyl halides

Question 26

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

Answer

m-Nitrophenol

Answer

Nitrobenzene

Answer

o-Nitrophenol

Question 27

27. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electrically neutral

Answer

Electron-donating

Question 28

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

Answer

Electrophilic aromatic substitution

Answer

Addition reaction

Answer

Nucleophilic substitution

Answer

Free radical substitution

Question 29

29. Phenol reacts with acetic anhydride to form:

Question 30

30. 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 31

31. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Nitric acid

Question 32

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

Answer

Tert-butanol

Answer

2-propanol

Question 33

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

Question 34

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

Question 35

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

Answer

Esterification

Answer

Halogenation

Answer

Dehydration to form alkene

Question 36

36. 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 37

37. Which type of alcohol forms esters most readily?

Question 38

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

Answer

2-propanol

Answer

Tert-butanol

Question 39

39. Which of the following alcohols is tertiary?

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Question 40

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

Answer

Ethylene glycol

Question 41

41. Which is more reactive towards electrophilic substitution?

Question 42

42. Alcohols differ from phenols in that alcohols:

Answer

Do not show electrophilic aromatic substitution

Answer

Are more acidic

Answer

Are aromatic

Answer

Are less soluble in water

Question 43

43. Phenol reacts with bromine water to give:

Answer

4-bromophenol

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

Benzyl bromide

Question 44

44. Phenol reacts with acetic anhydride to form:

Question 45

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

Question 46

46. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 47

47. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 48

48. Alcohols react with carboxylic acids to form:

Question 49

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

Answer

2-propanol

Answer

Tert-butanol

Question 50

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

Answer

Tert-butanol

Answer

2-propanol

Question 51

51. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Question 52

52. 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 53

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

Answer

Tertiary alcohol

Answer

Primary alcohol

Answer

Secondary alcohol

Question 54

54. Which compound is more acidic?

Question 55

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

Answer

Acetic acid

Question 56

56. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 57

57. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Nitric acid

Question 58

58. Which type of alcohol is isopropyl alcohol?

Question 59

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

Answer

Reduction of carbonyl compounds

Answer

Hydroboration

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Question 60

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

Question 61

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

Answer

Electrophilic aromatic substitution

Answer

Nucleophilic substitution

Answer

Free radical substitution

Answer

Addition reaction

Question 62

62. Which reaction forms phenol from benzene?

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Question 63

63. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 64

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

Answer

Acetic acid

Answer 122

Acetic acid

Answer 123

Salicylic acid

Answer 124

Tert-butanol

Answer 125

2-propanol

Answer 126

HCl/ZnCl₂

Answer 127

Na₂CO₃

Answer 128

Solubility in water

Answer 129

High boiling point

Answer 130

Resonance stabilization of phenoxide ion

Answer 131

High molecular weight

Answer 132

Tert-butanol

Answer 133

2-propanol

Answer 134

Ethyl alcohol

Answer 135

2-propanol

Answer 136

Nitrobenzene

Answer 137

o-Nitrophenol

Answer 138

m-Nitrophenol

Answer 139

Do not show electrophilic aromatic substitution

Answer 140

Are more acidic

Answer 141

Are less soluble in water

Answer 142

Are aromatic

Answer 143

Esterification

Answer 144

Dehydration

Answer 145

Friedel-Crafts alkylation

Answer 146

Not at all

Answer 147

With heating only

Answer 148

Immediately at room temperature

Answer 149

Friedel-Crafts alkylation

Answer 150

Dehydration

Answer 151

Esterification

Answer 152

Resonance stabilization of phenoxide ion

Answer 153

High molecular weight

Answer 154

High boiling point

Answer 155

Solubility in water

Answer 156

Dehydration to form alkene

Answer 157

Esterification

Answer 158

Halogenation

Answer 159

2-propanol

Answer 160

Ethyl alcohol

Answer 161

2-propanol

Answer 162

Tert-butanol

Answer 163

Acetaldehyde

Answer 164

Acetic anhydride

Answer 165

Ethyl acetate

Answer 166

Immediately at room temperature

Answer 167

With heating only

Answer 168

Not at all

Answer 169

Ethylene glycol

Answer 170

2,4,6-tribromophenol

Answer 171

Benzyl bromide

Answer 172

2-bromophenol

Answer 173

4-bromophenol

Answer 174

Alcohols react faster with bromine water

Answer 175

Phenols are more acidic than alcohols

Answer 176

Phenols undergo SN1 reactions

Answer 177

Alcohols have aromatic rings

Answer 178

Tollen’s test

Answer 179

Lucas test

Answer 180

Ferric chloride test

Answer 181

Benedict’s test

Answer 182

Benzyl alcohol

Answer 183

Phenols form ketones

Answer 184

Alcohols have higher boiling point

Answer 185

Alcohols are colored

Answer 186

Phenols give violet color with FeCl₃

Answer 187

Phenols give violet color with FeCl₃

Answer 188

Alcohols have higher boiling point

Answer 189

Phenols form ketones

Answer 190

Alcohols are colored

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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