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 Multiple Choice QuestionsMultiple Choice Questions

31.

When a mixture of 1-hexanol and hexanoic acid in diethyl ether is shaken with an aqueous NaHCO3 solution, then which of the following is right distribution?

  • In ether  In sodium bicarbonate solution
    Sodium hexanoate 1- hexanol
  • 1- hexanol Hexanoic acid
  • 1- hexanol Sodium hexanoate
  • Hexanoic acid 1- hexanol

32.

The correct order of increasing acidic strength is

  • phenol < ethanol < chloroacetic acid < acetic acid

  • ethanol < phenol < chloroacetic acid < acetic acid

  • ethanol < phenol < acetic acid < chloroacetic acid

  • chloroacetic acid < acetic acid < phenol < ethanol


33.

The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with

  • PCl3

  • PCl5

  • SOCl2 in presence of pyridine

  • dry HCl in the presence of anhydrous ZnCl2


34.

Ethyl alcohol reacts with thionyl chloride to give

  • CH3CH2Cl + HCl

  • CH3CH2Cl + H2O + SO2

  • CH3CH2Cl +HCl + SO2

  • CH3CH2Cl +SO2 + Cl2


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35.

Primary alcohols can be obtained from the reaction of R Mg X with

  • CO2

  • HCHO

  • CH3CHO

  • H2O


36.

The best method to separate the mixture of ortho and para nitrophenol (1 : 1) is

  • vaporisation

  • colour spectrum

  • distillation

  • crystallisation


37.

Which is used in alcoholic beverages ?

  • Methanol

  • Ethanol

  • Phenol

  • Glycerol


38.

Lucas reagent is

  • anhy. ZnCl2 and NH3

  • anhy. ZnCl2 and CaCl2

  • anhy. ZnCl2 and conc. HCl

  • anhy. ZnCl2 and conc. HCl gas


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39.

The enzyme which can catalyse the conversion of glucose to ethanol is

  • zymase

  • invertase

  • maltase

  • diastase


40.

Hydrolysis of phenyl isocyanide forms

  • benzoic acid

  • formic acid

  • acetic acid

  • None of these


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