Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

1. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Hydroxybenzene

Answer

Benzene hydroxide

Question 2

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

Answer

Ethyl alcohol

Question 3

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

Question 4

4. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 5

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

Answer

Tert-butanol

Answer

2-propanol

Question 6

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

Answer

Nucleophilic substitution

Answer

Free radical substitution

Answer

Electrophilic aromatic substitution

Answer

Addition reaction

Question 7

7. What functional group is present in alcohols?

Question 8

8. In the Lucas test, tertiary alcohols react:

Answer

With heating only

Answer

Immediately at room temperature

Answer

Not at all

Question 9

9. Which compound is more acidic?

Question 10

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

Answer

Tert-butanol

Answer

2-propanol

Question 11

11. What functional group is present in alcohols?

Question 12

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

Question 13

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

Answer

Acetic acid

Answer

Salicylic acid

Question 14

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

Answer

Alcohols are colored

Answer

Alcohols have higher boiling point

Answer

Phenols give violet color with FeCl₃

Answer

Phenols form ketones

Question 15

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

Answer

Alcohols have aromatic rings

Answer

Phenols are saturated

Answer

Alcohols contain carbonyl groups

Answer

Phenols have –OH directly bonded to benzene

Question 16

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

Answer

2-propanol

Answer

Tert-butanol

Question 17

17. 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 18

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

Question 19

19. Which of the following is most acidic?

Question 20

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

Question 21

21. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 22

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

Answer

2-propanol

Answer

Tert-butanol

Question 23

23. Alcohols differ from phenols in that alcohols:

Answer

Do not show electrophilic aromatic substitution

Answer

Are aromatic

Answer

Are less soluble in water

Answer

Are more acidic

Question 24

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

Answer

2-propanol

Question 25

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

Question 26

26. Which of the following alcohols is tertiary?

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Question 27

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

Answer

Acetic acid

Question 28

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

Answer

Esterification

Answer

Dehydration to form alkene

Answer

Halogenation

Question 29

29. Which compound is more acidic?

Question 30

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 31

31. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 32

32. Which type of alcohol forms esters most readily?

Question 33

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

Answer

Hydroboration

Answer

Reduction of carbonyl compounds

Answer

Hydrolysis of alkyl halides

Answer

Nitration of alkanes

Question 34

34. Alcohols differ from phenols in that alcohols:

Answer

Are more acidic

Answer

Are less soluble in water

Answer

Are aromatic

Answer

Do not show electrophilic aromatic substitution

Question 35

35. Phenol reacts with bromine water to give:

Answer

2,4,6-tribromophenol

Answer

Benzyl bromide

Answer

2-bromophenol

Answer

4-bromophenol

Question 36

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

Answer

Acetic anhydride

Answer

Acetaldehyde

Answer

Ethyl acetate

Question 37

37. Phenol is more acidic than alcohol due to:

Answer

High molecular weight

Answer

Solubility in water

Answer

High boiling point

Answer

Resonance stabilization of phenoxide ion

Question 38

38. Which type of alcohol is isopropyl alcohol?

Question 39

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

Answer

Tertiary alcohol

Answer

Primary alcohol

Answer

Secondary alcohol

Question 40

40. Phenol reacts with acetic anhydride to form:

Question 41

41. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Acetic acid

Answer

Nitric acid

Answer

Hydrochloric acid

Question 42

42. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 43

43. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 44

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

Answer

Secondary alcohol

Answer

Primary alcohol

Answer

Tertiary alcohol

Question 45

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

Answer

Acetic acid

Question 46

46. Which of the following statements is true?

Answer

Alcohols react faster with bromine water

Answer

Phenols are more acidic than alcohols

Answer

Alcohols have aromatic rings

Answer

Phenols undergo SN1 reactions

Question 47

47. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 48

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

Question 49

49. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Question 50

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

Answer

2-propanol

Answer

Tert-butanol

Question 51

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

Question 52

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

Answer

Tert-butanol

Answer

2-propanol

Question 53

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

Answer

Tert-butanol

Answer

2-propanol

Question 54

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

Answer

Para and ortho positions

Answer

Only ortho position

Answer

Meta position

Answer

Only para position

Question 55

55. Alcohols react with carboxylic acids to form:

Question 56

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

Answer

Alcohols have higher boiling point

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Phenols form ketones

Question 57

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

Answer

Acetic acid

Answer

Salicylic acid

Question 58

58. Which of the following is most acidic?

Question 59

59. Which acid is used in esterification of alcohols?

Answer

Nitric acid

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Question 60

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

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Answer

Esterification

Question 61

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 62

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

Answer

Halogenation

Answer

Dehydration to form alkene

Answer

Esterification

Question 63

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

Answer

2-propanol

Question 64

64. Which of the following alcohols is tertiary?

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Answer 126

Na₂CO₃

Answer 127

HCl/ZnCl₂

Answer 128

Friedel-Crafts alkylation

Answer 129

Dow’s process (chlorobenzene + NaOH)

Answer 130

Sulfonation

Answer 131

2-bromophenol

Answer 132

Benzyl bromide

Answer 133

2,4,6-tribromophenol

Answer 134

4-bromophenol

Answer 135

Ethyl acetate

Answer 136

Acetaldehyde

Answer 137

Acetic anhydride

Answer 138

m-Nitrophenol

Answer 139

Nitrobenzene

Answer 140

o-Nitrophenol

Answer 141

Phenyl chloride

Answer 142

Sodium phenoxide

Answer 143

Electrically neutral

Answer 144

Electron-withdrawing

Answer 145

Electron-donating

Answer 146

High boiling point

Answer 147

High molecular weight

Answer 148

Solubility in water

Answer 149

Resonance stabilization of phenoxide ion

Answer 150

Sulfonation

Answer 151

Friedel-Crafts alkylation

Answer 152

Dow’s process (chlorobenzene + NaOH)

Answer 153

HCl/ZnCl₂

Answer 154

Na₂CO₃

Answer 155

Ethylene glycol

Answer 156

Alcohols have aromatic rings

Answer 157

Phenols undergo SN1 reactions

Answer 158

Phenols are more acidic than alcohols

Answer 159

Alcohols react faster with bromine water

Answer 160

Quaternary

Answer 161

Ethyl alcohol

Answer 162

m-Nitrophenol

Answer 163

Nitrobenzene

Answer 164

o-Nitrophenol

Answer 165

Electron-donating

Answer 166

Electrically neutral

Answer 167

Electron-withdrawing

Answer 168

Benedict’s test

Answer 169

Lucas test

Answer 170

Ferric chloride test

Answer 171

Tollen’s test

Answer 172

Ethylene glycol

Answer 173

2-propanol

Answer 174

Tert-butanol

Answer 175

Hydroboration

Answer 176

Reduction of carbonyl compounds

Answer 177

Hydrolysis of alkyl halides

Answer 178

Nitration of alkanes

Answer 179

Tollen’s test

Answer 180

Benedict’s test

Answer 181

Ferric chloride test

Answer 182

Lucas test

Answer 183

Nucleophilic substitution

Answer 184

Addition reaction

Answer 185

Free radical substitution

Answer 186

Electrophilic aromatic substitution

Answer 187

Only para position

Answer 188

Only ortho position

Answer 189

Para and ortho positions

Answer 190

Meta position

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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