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Alkyl halides

Class 12 · Chemistry · 5 questions

Name: ____________________   Date: ____________

  1. The functional group in an alkyl halide is:

    • A -COOH
    • B -OH
    • C -X (a halogen)
    • D -NH2

  2. Alkyl halides undergo mainly:

    • A Electrophilic addition
    • B Combustion only
    • C Nucleophilic substitution
    • D Polymerisation

  3. Aqueous NaOH converts bromoethane into:

    • A Ethanal
    • B Ethanol
    • C Ethene
    • D Ethane

  4. Ethanolic KOH converts bromoethane mainly into:

    • A Ethanol
    • B Ethane
    • C Ethanoic acid
    • D Ethene

  5. Which halide is the most reactive towards substitution (same alkyl group)?

    • A Iodide
    • B Chloride
    • C All equal
    • D Fluoride

Answer key

1. C, 2. C, 3. B, 4. D, 5. A

  1. An alkyl halide has a halogen bonded to an alkyl group.

  2. A nucleophile replaces the halogen.

  3. OH- replaces Br-.

  4. Elimination of HBr gives the alkene.

  5. The C-I bond is the weakest, so iodide leaves most easily.