Quiz  /  Alcohols Phenols and Ethers Class 12 MCQ Questions With Answers

  • 1. 
    Which of the following compounds is to be reacted with Methanal followed by hydrolysis to give Phenymethanol.

  • Methyl magnesium bromide
  • Bromobenzene
  • Phenol
  • Phenyl magnesium bromide

  • 2. 
    What is the observation for the above reaction?

  • No cloudy solution after within 15 minutes
  • Cloudy solution within 5 minutes
  • Cloudy immediately/instantly
  • Light yellow precipitate formed

  • 3. 
    What is the functional group of alcohols?

  • Alkoxy
  • Hydroxyl
  • Carboxyl
  • Carbonyl

  • 4. 
    What is the name of this product?

  • 1– propanol
  • 1– propene
  • ethylene glycol
  • 3– propanol
  • 1,2,3 – propanetriol

  • 5. 
    What is the chemical test to distinguish class of alcohols (primary, secondary and tertiary alcohol)

  • Baeyer's Test
  • Tollens' Test
  • Iodoform Test
  • Lucas Test

  • 6. 
    Which of the following name reactions produces salicyldehyde?

  • Kolbe's reaction
  • Rosenmund reduction
  • Williamson's synthesis
  • Reimer Tiemann reaction

  • 7. 
    Which of the following are not used to convert RCHO into RCH2OH?

  • H2 /Pd
  • LiAlH4
  • NaBH4
  • Reaction with RMgX followed by hydrolysis

  • 8. 
    What is the side product for this reaction (Iodoform Test) ? The side product give the light yellow precipitated in this reaction.

  • silver
  • dichloromethane
  • triiodomethane
  • water

  • 9. 
    Which of the names below can be used to correctly name the above compound?

  • 2-methyl -2-propanol/p>
  • Tertiary butanol
  • Both A & B

  • 10. 
    At least how many carbon atoms are found in a tertiary alcohol?

  • 1
  • 2
  • 3
  • 4

  • 11. 
    The products obtained by reaction of Anisole with HI are __________

  • Methanol and Iodobenzene
  • Phenol and Iodomethane
  • Phenol and Methanol
  • Ethanol and Iodobenzene

  • 12. 
    The process of converting alkyl halides into alcohols involves_____________

  • addition reaction
  • substitution reaction
  • dehydrohalogenation reaction
  • rearrangement reaction

  • 13. 
    Name this functional group

  • hydroxide
  • hydroxyl
  • carboxyl
  • ester link

  • 14. 
    Which of the class of alcohols can be produced ketone when reacted with acidified KMnO4 and heated?

  • primary alcohol
  • secondary alcohol
  • tertiary alcohol
  • all the class of alcohols

  • 15. 
    Why 2-butonal most soluble in water than 2-octanol. What is the key factor?

  • Because factor of intermolecular forces
  • Because factor of molecular weight
  • Because factor of surface areas
  • Because factor of hydrophobic areas

  • 16. 
    Dehydration of alcohol is an example of

  • redox reaction
  • elimination reaction
  • substitution reaction
  • addition reaction

  • 17. 
    IUPAC name of m-cresol is ___________

  • 3-methylphenol
  • 3-chlorophenol
  • 3-methoxyphenol
  • benzene-1,3-diol

  • 18. 
    Williamson's synthesis gives best results when sodium alkoxide reacts with___________

  • Primary alkyl halides
  • Tertiary alkyl halide
  • Primary alcohol
  • Tertiary alcohol

  • 19. 
    Arrange the given compounds in order of decreasing melting points.

  • I>II>III
  • I=II=III
  • III>II>I
  • III>I>II
  • II>I>III

  • 20. 
    Why alcohols have higher boiling point than alkanes?

  • Alcohols have Van der Waal's forces between the molecules
  • Alcohols have intermolecular Hydrogern bonding
  • Alcohols exist as dimers.
  • Alcohols have intramolecular Hydrogen bonding.

  • 21. 
    Which of the following set of reactants is appropriate for the preparation of t-butyl ethyl ether?

  • t-butyl chloride and Sodium ethoxide.
  • Sodium tertiary butoxide and Ethyl chloride
  • Ethyl chloride and Butyl alcohol
  • Butyl chloride and Ethyl alcohol

  • 22. 
    When ethyl alcohol is oxidized by two degrees, which one of the following products results?

  • Acetaldehyde
  • Oxy-propane
  • Acetic acid
  • Dimethyl ether
  • Dimethyl ketone

  • 23. 
    What is the gases released based on this reaction?

  • CO2 gas
  • H2 gas
  • Br2 gas
  • O2 gas

  • 24. 
    What is the correct IUPAC name of isopropyl alcohol?

  • Propane-1,2-diol
  • Propan-2-ol
  • Propan-1-ol
  • Propane-1,2,3-triol
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