Preparation and properties of Phenol Quiz (25 Q)

Phenols Quiz

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Test your knowledge on the preparation and properties of phenols for JEE and NEET.

1. Phenol is prepared from chlorobenzene by which process?

• Dow's process
• Friedel-Crafts reaction
• Kolbe's reaction
• Reimer-Tiemann reaction

2. The boiling point of phenol is higher than that of toluene due to:

• Van der Waals forces
• Hydrogen bonding
• Dipole-dipole interactions
• Ionic character

3. The oxidation of phenol with chromic acid gives:

• Benzoic acid
• Benzene
• Benzoquinone
• Salicylic acid

4. Phenols are more acidic than alcohols due to:

• The inductive effect of the phenyl group
• The resonance stabilization of the phenoxide ion
• The electron-donating effect of the -OH group
• Steric hindrance

5. The reaction of phenol with dilute nitric acid gives a mixture of:

• Ortho and para nitrophenol
• Only ortho nitrophenol
• Only para nitrophenol
• Picric acid

6. The reaction of phenol with concentrated nitric acid gives:

• Ortho and para nitrophenol
• Picric acid
• Nitrobenzene
• Benzoic acid

7. Which of the following is the most acidic?

• Phenol
• o-nitrophenol
• m-nitrophenol
• p-nitrophenol

8. The reaction of phenol with bromine water gives a white precipitate of:

• 2,4-dibromophenol
• 2,4,6-tribromophenol
• Bromobenzene
• Phenol bromide

9. The reaction of phenol with zinc dust gives:

• Benzene
• Benzoic acid
• Toluene
• Cyclohexanol

10. The reaction of phenol with chloroform in the presence of sodium hydroxide gives salicylaldehyde. This reaction is known as:

• Kolbe's reaction
• Reimer-Tiemann reaction
• Friedel-Crafts reaction
• Williamson synthesis

11. Which of the following is an example of an electrophilic substitution reaction of phenol?

• Reaction with zinc dust
• Reaction with concentrated nitric acid
• Oxidation with chromic acid
• Reaction with sodium hydroxide

12. Phenol reacts with acetyl chloride to give:

• Phenyl acetate
• Salicylic acid
• Toluene
• Benzoic acid

13. Which of the following is the most acidic?

• Phenol
• o-nitrophenol
• m-nitrophenol
• p-nitrophenol

14. The reaction of phenol with carbon dioxide in the presence of sodium hydroxide at high temperature and pressure gives salicylic acid. This is known as:

• Kolbe's reaction
• Reimer-Tiemann reaction
• Friedel-Crafts reaction
• Williamson synthesis

15. What is the major product of the reaction between phenol and a solution of bromine in carbon disulfide ($CS_2$)?

• 2,4,6-tribromophenol
• o-bromophenol
• p-bromophenol
• A mixture of o- and p-bromophenol

16. The nitration of phenol with dilute nitric acid is an example of:

• Nucleophilic substitution
• Electrophilic substitution
• Oxidation
• Reduction

17. Which of the following is the correct decreasing order of acidity?

• Phenol > Ethanol > Water
• Water > Phenol > Ethanol
• Phenol > Water > Ethanol
• Ethanol > Phenol > Water

18. Phenols can be distinguished from alcohols by using:

• Tollens' reagent
• Lucas reagent
• Bromine water test
• Fehling's solution

19. The reaction of phenol with phthalic anhydride in the presence of concentrated sulfuric acid gives a dye called:

• Fluorescein
• Phenolphthalein
• Methylene blue
• Congo red

20. The final product of the reaction of phenol with an excess of bromine water is:

• 2,4-dibromophenol
• 2,4,6-tribromophenol
• Bromobenzene
• p-bromophenol

21. The reaction of phenol with concentrated sulfuric acid gives a mixture of:

• o- and p-hydroxybenzenesulfonic acid
• o- and m-hydroxybenzenesulfonic acid
• o- and p-benzenesulfonic acid
• Only p-hydroxybenzenesulfonic acid

22. What is the major product of the reaction of phenol with a mixture of concentrated $H_2SO_4$ and fuming $H_2SO_4$ (oleum)?

• Phenol-2-sulfonic acid
• Phenol-4-sulfonic acid
• Phenol-2,4-disulfonic acid
• Phenol-2,4,6-trisulfonic acid

23. Which of the following statements about phenol is correct?

• It is a strong acid.
• It is a neutral compound.
• It is a weak acid.
• It is a strong base.

24. What is the product of the reaction of phenol with formaldehyde in the presence of an acid or base catalyst?

• Bakelite
• Novolac
• Both A and B
• Salicylaldehyde

25. The reaction of phenol with bromine in a nonpolar solvent like $CS_2$ gives a mixture of:

• Only o-bromophenol
• Only p-bromophenol
• o- and p-bromophenol
• 2,4,6-tribromophenol

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