Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

Tert-butanol

Answer

2-propanol

Question 2

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

Answer

Ethyl acetate

Answer

Acetaldehyde

Answer

Acetic anhydride

Question 3

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

Answer

Acetic acid

Answer

Salicylic acid

Question 4

4. Which type of alcohol forms esters most readily?

Question 5

5. Phenol reacts with acetic anhydride to form:

Question 6

6. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Sulfuric acid

Question 7

7. Which type of alcohol is isopropyl alcohol?

Question 8

8. What functional group is present in alcohols?

Question 9

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

Answer

Acetic acid

Question 10

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

Answer

Nitration of alkanes

Answer

Hydroboration

Answer

Reduction of carbonyl compounds

Answer

Hydrolysis of alkyl halides

Question 11

11. Which compound is more acidic?

Question 12

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

Answer

Nitrobenzene

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Question 13

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

Answer

Ethylene glycol

Question 14

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

Answer

Esterification

Answer

Halogenation

Answer

Dehydration to form alkene

Question 15

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

Answer

Esterification

Answer

Halogenation

Answer

Dehydration to form alkene

Question 16

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

Question 17

17. Which reaction forms phenol from benzene?

Answer

Friedel-Crafts alkylation

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Question 18

18. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Acetic acid

Answer

Sulfuric acid

Answer

Hydrochloric acid

Question 19

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

Answer

Friedel-Crafts alkylation

Answer

Esterification

Answer

Dehydration

Question 20

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

Answer

Meta position

Answer

Para and ortho positions

Answer

Only para position

Answer

Only ortho position

Question 21

21. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 22

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

Answer

Tert-butanol

Answer

2-propanol

Question 23

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

Answer

Alcohols are colored

Answer

Phenols give violet color with FeCl₃

Answer

Phenols form ketones

Answer

Alcohols have higher boiling point

Question 24

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

Answer

Ethyl alcohol

Question 25

25. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 26

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

Answer

2-propanol

Answer

Tert-butanol

Question 27

27. Which type of alcohol is isopropyl alcohol?

Question 28

28. Which is more reactive towards electrophilic substitution?

Question 29

29. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Question 30

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

Question 31

31. Which of the following is most acidic?

Question 32

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

Question 33

33. Alcohols react with carboxylic acids to form:

Question 34

34. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

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. Alcohols differ from phenols in that alcohols:

Answer

Are more acidic

Answer

Do not show electrophilic aromatic substitution

Answer

Are aromatic

Answer

Are less soluble in water

Question 38

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

Answer

2-propanol

Question 39

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

Answer

Ferric chloride test

Answer

Lucas test

Answer

Benedict’s test

Answer

Tollen’s test

Question 40

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

Answer

Tert-butanol

Answer

2-propanol

Question 41

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 42

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

Question 43

43. Phenol is more acidic than alcohol due to:

Answer

Resonance stabilization of phenoxide ion

Answer

High molecular weight

Answer

High boiling point

Answer

Solubility in water

Question 44

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 45

45. Phenol reacts with bromine water to give:

Answer

4-bromophenol

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

Benzyl bromide

Question 46

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

Question 47

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

Answer

Alcohols have higher boiling point

Answer

Phenols form ketones

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Question 48

48. Which of the following is most acidic?

Question 49

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

Answer

Only para position

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Meta position

Question 50

50. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 51

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

Answer

Acetic acid

Answer

Salicylic acid

Question 52

52. Which compound is more acidic?

Question 53

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

Question 54

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

Answer

Tertiary alcohol

Answer

Primary alcohol

Answer

Secondary alcohol

Question 55

55. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 56

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

Question 57

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

Question 58

58. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electron-donating

Answer

Electrically neutral

Question 59

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

Question 60

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

Answer

Phenols have –OH directly bonded to benzene

Answer

Phenols are saturated

Answer

Alcohols have aromatic rings

Answer

Alcohols contain carbonyl groups

Question 61

61. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electron-donating

Answer

Electrically neutral

Question 62

62. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 63

63. Which of the following statements is true?

Answer

Phenols are more acidic than alcohols

Answer

Phenols undergo SN1 reactions

Answer

Alcohols react faster with bromine water

Answer

Alcohols have aromatic rings

Question 64

64. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Answer 116

Are more acidic

Answer 117

Are aromatic

Answer 118

Do not show electrophilic aromatic substitution

Answer 119

Are less soluble in water

Answer 120

Ethyl alcohol

Answer 121

Acetic acid

Answer 122

Tollen’s test

Answer 123

Benedict’s test

Answer 124

Ferric chloride test

Answer 125

Lucas test

Answer 126

Alcohols react faster with bromine water

Answer 127

Phenols undergo SN1 reactions

Answer 128

Alcohols have aromatic rings

Answer 129

Phenols are more acidic than alcohols

Answer 130

Benzyl bromide

Answer 131

2-bromophenol

Answer 132

2,4,6-tribromophenol

Answer 133

4-bromophenol

Answer 134

Tert-butanol

Answer 135

2-propanol

Answer 136

2-propanol

Answer 137

Resonance stabilization of phenoxide ion

Answer 138

High molecular weight

Answer 139

High boiling point

Answer 140

Solubility in water

Answer 141

Hydrolysis of alkyl halides

Answer 142

Hydroboration

Answer 143

Reduction of carbonyl compounds

Answer 144

Nitration of alkanes

Answer 145

Sulfonation

Answer 146

Dow’s process (chlorobenzene + NaOH)

Answer 147

Friedel-Crafts alkylation

Answer 148

Ethylene glycol

Answer 149

o-Nitrophenol

Answer 150

m-Nitrophenol

Answer 151

Nitrobenzene

Answer 152

Acetic anhydride

Answer 153

Ethyl acetate

Answer 154

Acetaldehyde

Answer 155

Tert-butanol

Answer 156

2-propanol

Answer 157

Addition reaction

Answer 158

Free radical substitution

Answer 159

Electrophilic aromatic substitution

Answer 160

Nucleophilic substitution

Answer 161

Secondary alcohol

Answer 162

Primary alcohol

Answer 163

Tertiary alcohol

Answer 164

Free radical substitution

Answer 165

Addition reaction

Answer 166

Nucleophilic substitution

Answer 167

Electrophilic aromatic substitution

Answer 168

Tert-butanol

Answer 169

2-propanol

Answer 170

Phenols are saturated

Answer 171

Alcohols have aromatic rings

Answer 172

Alcohols contain carbonyl groups

Answer 173

Phenols have –OH directly bonded to benzene

Answer 174

Na₂CO₃

Answer 175

HCl/ZnCl₂

Answer 176

Benzene hydroxide

Answer 177

Benzyl alcohol

Answer 178

Hydroxybenzene

Answer 179

Quaternary

Answer 180

Esterification

Answer 181

Friedel-Crafts alkylation

Answer 182

Dehydration

Answer 183

(CH₃)₃COH

Answer 184

CH₃CH(OH)CH₃

Answer 185

CH₃CH₂OH

Answer 186

CH₃CH(OH)CH₃

Answer 187

CH₃CH₂OH

Answer 188

(CH₃)₃COH

Answer 189

2-propanol

Answer 190

Tert-butanol

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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