Chemistry Alcohols And Phenols Online Mcqs Test

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Question 1

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

Answer

Tert-butanol

Answer

2-propanol

Question 2

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

Answer

Lucas test

Answer

Ferric chloride test

Answer

Benedict’s test

Answer

Tollen’s test

Question 3

3. The –OH group in phenol makes it:

Answer

Electron-donating

Answer

Electron-withdrawing

Answer

Electrically neutral

Question 4

4. Which of the following alcohols is tertiary?

Answer

(CH₃)₃COH

Answer

CH₃CH₂OH

Answer

CH₃CH(OH)CH₃

Question 5

5. Which of the following is most acidic?

Question 6

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

Question 7

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

Answer

Phenols have –OH directly bonded to benzene

Answer

Alcohols have aromatic rings

Answer

Phenols are saturated

Answer

Alcohols contain carbonyl groups

Question 8

8. Which type of alcohol forms esters most readily?

Question 9

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

Answer

2-propanol

Answer

Tert-butanol

Question 10

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

Question 11

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

Question 12

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

Answer

Free radical substitution

Answer

Addition reaction

Answer

Electrophilic aromatic substitution

Answer

Nucleophilic substitution

Question 13

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

Answer

Ethyl alcohol

Question 14

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

Answer

m-Nitrophenol

Answer

Nitrobenzene

Answer

o-Nitrophenol

Question 15

15. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 16

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

Answer

Nitration of alkanes

Answer

Hydrolysis of alkyl halides

Answer

Reduction of carbonyl compounds

Answer

Hydroboration

Question 17

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

Answer

Esterification

Answer

Friedel-Crafts alkylation

Answer

Dehydration

Question 18

18. What functional group is present in alcohols?

Question 19

19. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 20

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

Answer

Ethyl acetate

Answer

Acetaldehyde

Answer

Acetic anhydride

Question 21

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

Answer

Friedel-Crafts alkylation

Answer

Esterification

Answer

Dehydration

Question 22

22. Which class of alcohol is CH₃CH₂CH₂OH?

Answer

Quaternary

Question 23

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

Answer

Acetic anhydride

Answer

Ethyl acetate

Answer

Acetaldehyde

Question 24

24. Which compound is more acidic?

Question 25

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

Answer

Ethylene glycol

Question 26

26. Phenol reacts with bromine water to give:

Answer

Benzyl bromide

Answer

2,4,6-tribromophenol

Answer

2-bromophenol

Answer

4-bromophenol

Question 27

27. Alcohols differ from phenols in that alcohols:

Answer

Do not show electrophilic aromatic substitution

Answer

Are aromatic

Answer

Are more acidic

Answer

Are less soluble in water

Question 28

28. Which type of alcohol is isopropyl alcohol?

Question 29

29. Which acid is used in esterification of alcohols?

Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Nitric acid

Question 30

30. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 31

31. Which acid is used in esterification of alcohols?

Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Sulfuric acid

Answer

Nitric acid

Question 32

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

Answer

Tert-butanol

Answer

2-propanol

Question 33

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

Answer

2-propanol

Answer

Tert-butanol

Question 34

34. 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 35

35. Which of the following statements is true?

Answer

Phenols undergo SN1 reactions

Answer

Alcohols have aromatic rings

Answer

Phenols are more acidic than alcohols

Answer

Alcohols react faster with bromine water

Question 36

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

Answer

2-propanol

Question 37

37. Which reagent converts alcohols into alkyl halides?

Answer

HCl/ZnCl₂

Answer

Na₂CO₃

Question 38

38. In the Lucas test, tertiary alcohols react:

Answer

Not at all

Answer

Immediately at room temperature

Answer

With heating only

Question 39

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

Question 40

40. Alcohols react with carboxylic acids to form:

Question 41

41. 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 42

42. Which compound is more acidic?

Question 43

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

Answer

Hydroboration

Answer

Nitration of alkanes

Answer

Reduction of carbonyl compounds

Answer

Hydrolysis of alkyl halides

Question 44

44. Which is more reactive towards electrophilic substitution?

Question 45

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

Answer

Primary alcohol

Answer

Tertiary alcohol

Answer

Secondary alcohol

Question 46

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

Answer

Phenyl chloride

Answer

Sodium phenoxide

Question 47

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

Answer

Halogenation

Answer

Dehydration to form alkene

Answer

Esterification

Question 48

48. Which alcohol gives a positive iodoform test?

Answer

Benzyl alcohol

Question 49

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

Answer

Alcohols have higher boiling point

Answer

Phenols give violet color with FeCl₃

Answer

Phenols form ketones

Answer

Alcohols are colored

Question 50

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

Answer

Salicylic acid

Answer

Acetic acid

Question 51

51. 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 52

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

Answer

Salicylic acid

Answer

Acetic acid

Question 53

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

Question 54

54. Which alcohol is commonly used in hand sanitizers?

Answer

Propan-1-ol

Question 55

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

Answer

Secondary alcohol

Answer

Tertiary alcohol

Answer

Primary alcohol

Question 56

56. Which type of alcohol is isopropyl alcohol?

Question 57

57. What functional group is present in alcohols?

Question 58

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

Answer

Ethyl alcohol

Question 59

59. Phenol reacts with bromine water to give:

Answer

4-bromophenol

Answer

Benzyl bromide

Answer

2-bromophenol

Answer

2,4,6-tribromophenol

Question 60

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

Answer

Sodium phenoxide

Answer

Phenyl chloride

Question 61

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

Question 62

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

Answer

m-Nitrophenol

Answer

o-Nitrophenol

Answer

Nitrobenzene

Question 63

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

Answer

Nucleophilic substitution

Answer

Addition reaction

Answer

Electrophilic aromatic substitution

Answer

Free radical substitution

Question 64

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

Answer 130

2-propanol

Answer 131

Alcohols are colored

Answer 132

Phenols form ketones

Answer 133

Alcohols have higher boiling point

Answer 134

Phenols give violet color with FeCl₃

Answer 135

Para and ortho positions

Answer 136

Meta position

Answer 137

Only para position

Answer 138

Only ortho position

Answer 139

Electron-withdrawing

Answer 140

Electron-donating

Answer 141

Electrically neutral

Answer 142

Benzyl alcohol

Answer 143

Hydroxybenzene

Answer 144

Benzene hydroxide

Answer 145

Phenols have –OH directly bonded to benzene

Answer 146

Alcohols have aromatic rings

Answer 147

Phenols are saturated

Answer 148

Alcohols contain carbonyl groups

Answer 149

Alcohols react faster with bromine water

Answer 150

Phenols are more acidic than alcohols

Answer 151

Phenols undergo SN1 reactions

Answer 152

Alcohols have aromatic rings

Answer 153

Not at all

Answer 154

Immediately at room temperature

Answer 155

With heating only

Answer 156

Acetic acid

Answer 157

Ethylene glycol

Answer 158

Only ortho position

Answer 159

Only para position

Answer 160

Meta position

Answer 161

Para and ortho positions

Answer 162

Friedel-Crafts alkylation

Answer 163

Sulfonation

Answer 164

Dow’s process (chlorobenzene + NaOH)

Answer 165

Benzyl alcohol

Answer 166

2-propanol

Answer 167

Tert-butanol

Answer 168

Benzene hydroxide

Answer 169

Benzyl alcohol

Answer 170

Hydroxybenzene

Answer 171

Acetic acid

Answer 172

Tert-butanol

Answer 173

2-propanol

Answer 174

(CH₃)₃COH

Answer 175

CH₃CH(OH)CH₃

Answer 176

CH₃CH₂OH

Answer 177

2-propanol

Answer 178

Tert-butanol

Answer 179

Esterification

Answer 180

Halogenation

Answer 181

Dehydration to form alkene

Answer 182

Sulfonation

Answer 183

Dow’s process (chlorobenzene + NaOH)

Answer 184

Friedel-Crafts alkylation

Answer 185

Tollen’s test

Answer 186

Benedict’s test

Answer 187

Ferric chloride test

Answer 188

Lucas test

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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