Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Question 2

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

Question 3

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

Answer

Tert-butanol

Answer

2-propanol

Question 4

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

Answer

Alcohols contain carbonyl groups

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols have aromatic rings

Answer

Phenols are saturated

Question 5

5. Phenol reacts with bromine water to give:

Answer

Benzyl bromide

Answer

2-bromophenol

Answer

2,4,6-tribromophenol

Answer

4-bromophenol

Question 6

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

Question 7

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

Answer

Ethylene glycol

Question 8

8. Which type of alcohol is isopropyl alcohol?

Question 9

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

Answer

Ferric chloride test

Answer

Tollen’s test

Answer

Lucas test

Answer

Benedict’s test

Question 10

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

Answer

Tertiary alcohol

Answer

Secondary alcohol

Answer

Primary alcohol

Question 11

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

Answer

Phenols give violet color with FeCl₃

Answer

Alcohols are colored

Answer

Phenols form ketones

Answer

Alcohols have higher boiling point

Question 12

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

Answer

Tert-butanol

Answer

2-propanol

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. Phenol is more acidic than alcohol due to:

Answer

Resonance stabilization of phenoxide ion

Answer

High molecular weight

Answer

Solubility in water

Answer

High boiling point

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. What is the IUPAC name of phenol?

Answer

Benzyl alcohol

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Question 17

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

Answer

Dehydration

Answer

Friedel-Crafts alkylation

Answer

Esterification

Question 18

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

Answer

2-propanol

Answer

Tert-butanol

Question 19

19. Which type of alcohol forms esters most readily?

Question 20

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

Answer

Acetic acid

Question 21

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

Question 22

22. Alcohols react with carboxylic acids to form:

Question 23

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

Answer

Nitrobenzene

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Question 24

24. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electron-donating

Answer

Electrically neutral

Question 25

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

Answer

Ethylene glycol

Question 26

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

Question 27

27. What functional group is present in alcohols?

Question 28

28. In the Lucas test, tertiary alcohols react:

Answer

Immediately at room temperature

Answer

With heating only

Answer

Not at all

Question 29

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

Answer

Nucleophilic substitution

Answer

Electrophilic aromatic substitution

Answer

Free radical substitution

Answer

Addition reaction

Question 30

30. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 31

31. 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 32

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

Answer

2-propanol

Question 33

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

Question 34

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

Answer

Nitrobenzene

Answer

o-Nitrophenol

Answer

m-Nitrophenol

Question 35

35. 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 36

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

Question 37

37. Which of the following alcohols is tertiary?

Answer

CH₃CH₂OH

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Question 38

38. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Nitric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Question 39

39. Which reaction forms phenol from benzene?

Answer

Sulfonation

Answer

Dow’s process (chlorobenzene + NaOH)

Answer

Friedel-Crafts alkylation

Question 40

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

Answer

Secondary alcohol

Answer

Tertiary alcohol

Answer

Primary alcohol

Question 41

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 42

42. The –OH group in phenol makes it:

Answer

Electron-withdrawing

Answer

Electrically neutral

Answer

Electron-donating

Question 43

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

Answer

Tert-butanol

Answer

2-propanol

Question 44

44. What is the IUPAC name of phenol?

Answer

Benzene hydroxide

Answer

Hydroxybenzene

Answer

Benzyl alcohol

Question 45

45. Which of the following alcohols is tertiary?

Answer

(CH₃)₃COH

Answer

CH₃CH(OH)CH₃

Answer

CH₃CH₂OH

Question 46

46. Alcohols differ from phenols in that alcohols:

Answer

Are less soluble in water

Answer

Do not show electrophilic aromatic substitution

Answer

Are more acidic

Answer

Are aromatic

Question 47

47. Which of the following is most acidic?

Question 48

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

Answer

Addition reaction

Answer

Electrophilic aromatic substitution

Answer

Nucleophilic substitution

Answer

Free radical substitution

Question 49

49. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Nitric acid

Question 50

50. 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 51

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

Question 52

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

Answer

Salicylic acid

Answer

Acetic acid

Question 53

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

Question 54

54. Which of the following is most acidic?

Question 55

55. Which reagent converts alcohols into alkyl halides?

Answer

Na₂CO₃

Answer

HCl/ZnCl₂

Question 56

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 57

57. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 58

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

Question 59

59. Which compound is more acidic?

Question 60

60. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 61

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

Answer

Hydrolysis of alkyl halides

Answer

Hydroboration

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Question 62

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

Answer

Ethyl alcohol

Question 63

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

Answer

Acetic anhydride

Answer

Ethyl acetate

Answer

Acetaldehyde

Question 64

64. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Answer 131

Alcohols have aromatic rings

Answer 132

Alcohols contain carbonyl groups

Answer 133

Phenols have –OH directly bonded to benzene

Answer 134

Phenols are saturated

Answer 135

Ethyl alcohol

Answer 136

Acetic acid

Answer 137

Acetic acid

Answer 138

Salicylic acid

Answer 139

Alcohols have aromatic rings

Answer 140

Phenols are more acidic than alcohols

Answer 141

Phenols undergo SN1 reactions

Answer 142

Alcohols react faster with bromine water

Answer 143

Dow’s process (chlorobenzene + NaOH)

Answer 144

Sulfonation

Answer 145

Friedel-Crafts alkylation

Answer 146

2-propanol

Answer 147

Tert-butanol

Answer 148

2-propanol

Answer 149

Benzyl alcohol

Answer 150

Acetaldehyde

Answer 151

Acetic anhydride

Answer 152

Ethyl acetate

Answer 153

2-propanol

Answer 154

Tert-butanol

Answer 155

Only ortho position

Answer 156

Only para position

Answer 157

Para and ortho positions

Answer 158

Meta position

Answer 159

Lucas test

Answer 160

Benedict’s test

Answer 161

Tollen’s test

Answer 162

Ferric chloride test

Answer 163

Not at all

Answer 164

Immediately at room temperature

Answer 165

With heating only

Answer 166

Friedel-Crafts alkylation

Answer 167

Esterification

Answer 168

Dehydration

Answer 169

Are aromatic

Answer 170

Are less soluble in water

Answer 171

Are more acidic

Answer 172

Do not show electrophilic aromatic substitution

Answer 173

Tert-butanol

Answer 174

2-propanol

Answer 175

Alcohols are colored

Answer 176

Phenols form ketones

Answer 177

Phenols give violet color with FeCl₃

Answer 178

Alcohols have higher boiling point

Answer 179

Benzyl alcohol

Answer 180

Tert-butanol

Answer 181

2-propanol

Answer 182

HCl/ZnCl₂

Answer 183

Na₂CO₃

Answer 184

2-bromophenol

Answer 185

2,4,6-tribromophenol

Answer 186

4-bromophenol

Answer 187

Benzyl bromide

Answer 188

Dehydration to form alkene

Answer 189

Halogenation

Answer 190

Esterification

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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