Methods of Preparation of Haloalkanes MCQ

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• Identify ‘X’ in the following reaction.
  ক

  AgF

  খ

  Hg2F2

  গ

  CoF2

  ঘ

  SbF3
• The Finkelstein reaction can be used to prepare alkyl fluorides.
  ক

  True

  খ

  False
• The Finkelstein reaction takes place in what medium?
  ক

  Concentrated HCl

  খ

  Concentrated H2SO4

  গ

  Dry acetone

  ঘ

  Water
• Which of the following is incorrect with regard to the reaction between C2H4 and Cl2 in CCl4?
  ক

  It results in the formation of a vicinal dihalide

  খ

  It results in the breaking of the C-C double bond

  গ

  It results in the formation of a colourless compound

  ঘ

  It results in the discharge of a reddish-brown colour
• When propene reacts with HBr, two products are formed out of which one is predominates the other. Identify the minor product.
  ক

  1-Bromopropane

  খ

  2-Bromopropane

  গ

  1-Bromobutane

  ঘ

  2-Bromobutane
• How many monohaloalkane isomers can be formed on the free radical bromination of (CH3)2CHCH2CH3?
  ক

  2

  খ

  3

  গ

  4

  ঘ

  5
• The following reaction to form haloalkanes is an example of which type of reaction? Propane + Cl2 (in the presence of UV light) = 1-Chloropropane + 2-Chloropropane
  ক

  Free radical substitution

  খ

  Halogen exchange

  গ

  Finkelstein reaction

  ঘ

  Swarts reaction
• Iodoalkanes can be obtained by heating alcohols with potassium iodide in __________
  ক

  hypophosphrus acid

  খ

  phosphorus acid

  গ

  phosphoric acid

  ঘ

  hypophosphoric acid
• What do you get by heating a mixture of hexanol and concentrated aqueous hydrogen chloride?
  ক

  Cyclochlorohexane

  খ

  Chlorohexane

  গ

  Phosphorus acid

  ঘ

  No reaction
• When ethanol reacts with PCl5, it gives three products which include chloroethane and hydrochloric acid. What is the third product?
  ক

  Phosphorus acid

  খ

  Phosphoric acid

  গ

  Phosphorus trichloride

  ঘ

  Phosphoryl chloride
• The reaction of a primary alcohol with which of the following gives purely a haloalkane?
  ক

  Phosphorus trichloride

  খ

  Phosphorus pentachloride

  গ

  Thionyl chloride

  ঘ

  Sulphuryl chloride
• What is the catalyst in the reaction of a primary alcohol with HCl to obtain a chloroalkane?
  ক

  anhydrous ZnCl2

  খ

  concentrated H2SO4

  গ

  red phosphorous

  ঘ

  pyridine
• What is the correct order of reactivity of the following haloacids with a given alcohol?
  ক

  HCl > HBr > HI

  খ

  HI > HBr > HCl

  গ

  HBr > HCl > HI

  ঘ

  HI > HCl > HBr
• What is the correct order of reactivity of alcohols with a given haloacid?
  ক

  1° > 2° > 3°

  খ

  3° > 2° > 1°

  গ

  1° > 3° > 2°

  ঘ

  2° > 1° > 3°