Nomenclature of Alkyl Halides

Nomenclature of Alkyl Halides MDCAT MCQs with answers

9 past paper MCQs on Nomenclature of Alkyl Halides, from the Alkyl Halides unit of MDCAT Chemistry. The year each question appeared is shown where known; tap “Show answer” for the correct option and a short solution.

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1.Neopentyl chloride belongs to which class of alkyl halides? (MDCAT 2022)

  1. primary alkyl halides
  2. secondary alkyl halides
  3. tertiary alkyl halides
  4. quaternary alkyl halides
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Correct answer: (a) primary alkyl halides

The carbon carrying the chlorine is attached to only one other carbon, so the halide is primary even though the molecule is branched.

2.IUPAC name of (CH3)3 CCH2 Br is (UHS MDCAT 2025)

  1. 1-bromopentane
  2. 1-bromo-2,2,2-trimethylethane
  3. 1-bromo-2,2-dimethylpropane
  4. 2-bromopentane
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Correct answer: (c) 1-bromo-2,2-dimethylpropane

The longest chain is propane, with two methyl groups on carbon 2 and the bromine on carbon 1.

3.IUPAC name of chloroform is: (SZABMU MDCAT 2025)

  1. methylchloride
  2. methyltrichloride
  3. trichloromethane
  4. chloromethane
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Correct answer: (c) trichloromethane

Chloroform is methane with three of its hydrogens replaced, that is trichloromethane.

4.Freon is commonly known as ? (UHS MDCAT 2023)

  1. Refrigerant
  2. A solvent
  3. Insecticides
  4. A fire extinguisher
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Correct answer: (a) Refrigerant

The freons are chlorofluorocarbons, used as refrigerants for their low boiling points and inertness.

5.Alkyl halides are also known as Halogen derivatives of: (SZABMU MDCAT 2023)

  1. Alkanes
  2. Alkenes
  3. Alkynes
  4. Alcohols
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Correct answer: (a) Alkanes

An alkyl halide is an alkane with a halogen in place of a hydrogen.

6.2-chlorobutane belongs to: (PMC MDCAT 2022)

  1. Primary Alkyl Halides
  2. Secondary Alkyl Halides
  3. Tertiary Alkyl Halides
  4. Quarternary Alkyl Halides
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Correct answer: (b) Secondary Alkyl Halides

The chlorine is on carbon 2, which carries two other carbons, so the halide is secondary.

7.The correct name of CH2Cl2 is: (PMC MDCAT 2022)

  1. Methyl chloride
  2. Methylene chloride
  3. Chloroform
  4. Carbonyl chloride
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Correct answer: (b) Methylene chloride

Dichloromethane is commonly called methylene chloride.

8.Halothane is a halo derivative of: (UHS MDCAT 2018)

  1. Methane
  2. Ethane
  3. Methanol
  4. Ethanol
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Correct answer: (b) Ethane

Halothane is 2-bromo-2-chloro-1,1,1-trifluoroethane.

9.Chloroform is used as the following except: (UHS MDCAT 2017)

  1. Precursor of making Teflon
  2. Precursor of making refrigerants
  3. Anesthetic
  4. Embalming chemicals
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Correct answer: (d) Embalming chemicals

Chloroform is a solvent, an anaesthetic and a precursor of refrigerants; formalin is what preserves tissue.

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