worksheet solved from Alcohol, phenol and Ethers

 

1. Which of the following is the correct IUPAC name for CH₃CH₂CH₂OH?
   a) Methanol
   b) Ethanol
   c) Propanol
   d) Butanol
   Answer: c) Propanol

2. Which reaction is used to prepare ethers from alcohols?
   a) Dehydration
   b) Hydrogenation
   c) Oxidation
   d) Reduction
   Answer: a) Dehydration

3. Phenol can be converted into anisole by reaction with:
   a) NaOH and CH₃Cl
   b) NaOH and CH₃I
   c) H₂SO₄ and CH₃OH
   d) NaCl and CH₃OH
   Answer: b) NaOH and CH₃I

4. Which of the following compounds will react with Lucas reagent at the fastest rate?
   a) Ethanol
   b) Propan-1-ol
   c) Propan-2-ol
   d) 2-Methylpropan-2-ol
   Answer: d) 2-Methylpropan-2-ol

5. What is the major product when phenol is treated with bromine water?
   a) o-Bromophenol
   b) m-Bromophenol
   c) p-Bromophenol
   d) 2,4,6-Tribromophenol
   Answer: d) 2,4,6-Tribromophenol

6. Which of the following is more acidic?
   a) Ethanol
   b) Phenol
   c) Methanol
   d) Water
   Answer: b) Phenol

7. What type of alcohol is CH₃CH₂CH(OH)CH₃?
   a) Primary alcohol
   b) Secondary alcohol
   c) Tertiary alcohol
   d) Quaternary alcohol
   Answer: b) Secondary alcohol

8. What is the IUPAC name of CH₃OCH₂CH₃?
   a) Methoxyethane
   b) Ethoxymethane
   c) Propanol
   d) Dimethyl ether
   Answer: a) Methoxyethane

9. Which of the following reactions is known as Williamson synthesis?
   a) Reaction between alcohol and alkyl halide
   b) Reaction between alkyl halide and sodium alkoxide
   c) Dehydration of alcohol
   d) Reaction of phenol with NaOH
   Answer: b) Reaction between alkyl halide and sodium alkoxide

10. What is the major product of the oxidation of a primary alcohol?
    a) Ketone
    b) Carboxylic acid
    c) Aldehyde
    d) Ether
    Answer: b) Carboxylic acid

11. Which of the following does not undergo dehydration easily?
    a) Ethanol
    b) Propan-1-ol
    c) Tert-butanol
    d) Methanol
    Answer: d) Methanol

12. In phenol, the -OH group is attached to:
    a) sp³ hybridized carbon
    b) sp² hybridized carbon of benzene ring
    c) sp carbon
    d) none of these
    Answer: b) sp² hybridized carbon of benzene ring

13. What type of interaction is responsible for the higher boiling point of alcohols?
    a) Ionic bonding
    b) Hydrogen bonding
    c) Van der Waals forces
    d) Covalent bonding
    Answer: b) Hydrogen bonding

14. Which one of the following compounds is least soluble in water?
    a) Ethanol
    b) Methanol
    c) Phenol
    d) Diethyl ether
    Answer: d) Diethyl ether

15. The product of oxidation of phenol with chromic acid is:
    a) Benzaldehyde
    b) Benzoic acid
    c) Quinone
    d) Toluene
    Answer: c) Quinone

16. The reaction of an alcohol with acyl chloride in the presence of a base gives:
    a) Ether
    b) Ester
    c) Aldehyde
    d) Ketone
    Answer: b) Ester

17. The reduction of phenol gives:
    a) Cyclohexane
    b) Cyclohexanol
    c) Benzene
    d) Benzaldehyde
    Answer: c) Benzene

18. Which of the following reactions does not produce ether?
    a) Dehydration of alcohols
    b) Williamson synthesis
    c) Friedel-Crafts acylation
    d) Reaction of phenol with alkyl halide
    Answer: c) Friedel-Crafts acylation

19. Which of the following is not an ether?
    a) Anisole
    b) Diethyl ether
    c) Ethyl acetate
    d) Methyl tert-butyl ether
    Answer: c) Ethyl acetate

20. The acidic nature of phenol is due to:
    a) Resonance stabilization of phenoxide ion
    b) Strong C–O bond
    c) Inductive effect of the -OH group
    d) Presence of π electrons
    Answer: a) Resonance stabilization of phenoxide ion

These questions cover various concepts, including structure, nomenclature, reactions, and properties of alcohols, phenols, and ethers