Preparation of Phenols MCQ

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• Phenol is obtained by heating aqueous solution of which of the following?
  ক

  Aniline

  খ

  Benzene diazonium chloride

  গ

  Benzoic acid

  ঘ

  Benzyl alcohol
• Which of the following is not a method for preparation of phenol?
  ক

  Dows process

  খ

  From diazonium salt

  গ

  By decarboxylation of salicylic acid

  ঘ

  By the decarboxylation of sodium benzoate
• What is the reactant ‘x’ and ‘y’ that will react with benzene to give phenol?
  ক

  X is Oleum and y is molten sodium hydroxide followed by H+

  খ

  X is Oleum and y is HCl

  গ

  X is Oleum and y is NH3

  ঘ

  X is Oleum and y is water
• What will be the product ‘a’ in the given reation?
  ক

  Enolate form

  খ

  Benzene diazonium chloride

  গ

  Benzene

  ঘ

  Chlorobenzene
• What is the reagent which will react with cumene to give phenol?
  ক

  Oxygen

  খ

  Hydrogen

  গ

  Nitrogen

  ঘ

  Ozone
• Reaction of aqueous sodium hydroxide on chlorobenzene gives which of the following products?
  ক

  o-chlorophenol

  খ

  o-chlorophenol

  গ

  phenol

  ঘ

  no reaction
• What is the commercial method of preparation of phenol?
  ক

  Dows process

  খ

  From diazonium salt

  গ

  By decarboxylation of salicylic acid

  ঘ

  Hock method
• Sodium benzene sulphonate reacts with NaOH and then on acidic hydrolysis, it gives which of the following compound?
  ক

  Phenol

  খ

  Benzoic acid

  গ

  Benzene

  ঘ

  Disodium benzaldehyde
• On heating aqueous solution of benzene diazonium chloride, which of the following is formed?
  ক

  benzene

  খ

  chlorobenzene

  গ

  phenol

  ঘ

  aniline